diff --git a/src/StronglyTypedIds/Templates/Guid/Guid_EfCoreValueConverter.cs b/src/StronglyTypedIds/Templates/Guid/Guid_EfCoreValueConverter.cs
index 18e4d5d61..518e827a3 100644
--- a/src/StronglyTypedIds/Templates/Guid/Guid_EfCoreValueConverter.cs
+++ b/src/StronglyTypedIds/Templates/Guid/Guid_EfCoreValueConverter.cs
@@ -8,4 +8,14 @@ public EfCoreValueConverter(Microsoft.EntityFrameworkCore.Storage.ValueConversio
                     value => new TESTID(value),
                     mappingHints
                 ) { }
+        }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<TESTID>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override TESTID Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return TESTID.New();
+            }
         }
\ No newline at end of file
diff --git a/src/StronglyTypedIds/Templates/Int/Int_EfCoreValueConverter.cs b/src/StronglyTypedIds/Templates/Int/Int_EfCoreValueConverter.cs
index 2245e6cf1..a17fa3169 100644
--- a/src/StronglyTypedIds/Templates/Int/Int_EfCoreValueConverter.cs
+++ b/src/StronglyTypedIds/Templates/Int/Int_EfCoreValueConverter.cs
@@ -8,4 +8,16 @@ public EfCoreValueConverter(Microsoft.EntityFrameworkCore.Storage.ValueConversio
                     value => new TESTID(value),
                     mappingHints
                 ) { }
+        }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<TESTID>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override TESTID Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new TESTID(_id);
+            }
         }
\ No newline at end of file
diff --git a/src/StronglyTypedIds/Templates/Long/Long_EfCoreValueConverter.cs b/src/StronglyTypedIds/Templates/Long/Long_EfCoreValueConverter.cs
index 96422f377..eb610437f 100644
--- a/src/StronglyTypedIds/Templates/Long/Long_EfCoreValueConverter.cs
+++ b/src/StronglyTypedIds/Templates/Long/Long_EfCoreValueConverter.cs
@@ -8,4 +8,16 @@ public EfCoreValueConverter(Microsoft.EntityFrameworkCore.Storage.ValueConversio
                     value => new TESTID(value),
                     mappingHints
                 ) { }
+        }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<TESTID>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override TESTID Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new TESTID(_id);
+            }
         }
\ No newline at end of file
diff --git a/test/StronglyTypedIds.IntegrationTests/LongIdTests.cs b/test/StronglyTypedIds.IntegrationTests/LongIdTests.cs
index b2f70dbcb..03563a147 100644
--- a/test/StronglyTypedIds.IntegrationTests/LongIdTests.cs
+++ b/test/StronglyTypedIds.IntegrationTests/LongIdTests.cs
@@ -200,6 +200,32 @@ public void WhenEfCoreValueConverterUsesValueConverter()
                 Assert.Equal(original.Id, retrieved.Id);
             }
         }
+        
+        [Fact]
+        public void WhenEfCoreValueGenerationUsesValueGenerator()
+        {
+            var connection = new SqliteConnection("DataSource=:memory:");
+            connection.Open();
+
+            var options = new DbContextOptionsBuilder<TestDbContext>()
+                .UseSqlite(connection)
+                .Options;
+
+            var original = new GenerationTestEntity(); 
+            using (var context = new TestDbContext(options))
+            {
+                context.Database.EnsureCreated();
+                context.GenerationEntities.Add(original); 
+                context.SaveChanges();
+            }
+
+            using (var context = new TestDbContext(options))
+            {
+                var all = context.GenerationEntities.ToList();
+                var retrieved = Assert.Single(all);
+                Assert.Equal(1, retrieved.Id.Value); 
+            }
+        }
 
         [Fact]
         public async Task WhenDapperValueConverterUsesValueConverter()
@@ -322,6 +348,7 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
         public class TestDbContext : DbContext
         {
             public DbSet<TestEntity> Entities { get; set; }
+            public DbSet<GenerationTestEntity> GenerationEntities { get; set; }
 
             public TestDbContext(DbContextOptions options) : base(options)
             {
@@ -337,6 +364,15 @@ protected override void OnModelCreating(ModelBuilder modelBuilder)
                             .HasConversion(new EfCoreLongId.EfCoreValueConverter())
                             .ValueGeneratedNever();
                     });
+                modelBuilder
+                    .Entity<GenerationTestEntity>(builder =>
+                    {
+                        builder
+                            .Property(x => x.Id)
+                            .HasConversion(new EfCoreLongId.EfCoreValueConverter())
+                            .HasValueGenerator<EfCoreLongId.EfCoreValueGenerator>()
+                            .ValueGeneratedOnAdd();
+                    });
             }
         }
 
@@ -345,6 +381,11 @@ public class TestEntity
             public EfCoreLongId Id { get; set; }
         }
 
+        public class GenerationTestEntity
+        {
+            public EfCoreLongId Id { get; set; }
+        }
+
         public class EntityWithNullableId
         {
             public NewtonsoftJsonLongId? Id { get; set; }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=0.verified.txt
index 194e7542b..f07131e41 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=0.verified.txt
@@ -46,5 +46,15 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=2.verified.txt
index 6e1dbb941..3c76f08cf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=2.verified.txt
@@ -46,5 +46,15 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=4.verified.txt
index 292c2428f..0db4d4096 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=4.verified.txt
@@ -47,5 +47,15 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=6.verified.txt
index b055114b5..679cd3178 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Guid_implementations=6.verified.txt
@@ -47,5 +47,15 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=0.verified.txt
index 04d8d094c..fabe80883 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=0.verified.txt
@@ -45,5 +45,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=2.verified.txt
index cd56bfdb8..c9c8b7238 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=2.verified.txt
@@ -45,5 +45,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=4.verified.txt
index 82c961fea..de3da0919 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=4.verified.txt
@@ -46,5 +46,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=6.verified.txt
index 7c1beae5a..4386935b1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Int_implementations=6.verified.txt
@@ -46,5 +46,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=0.verified.txt
index 241ac4315..0f8ca27cc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=0.verified.txt
@@ -45,5 +45,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=2.verified.txt
index 86a343456..186eafcad 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=2.verified.txt
@@ -45,5 +45,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=4.verified.txt
index e6dfea3e5..68d4ac2b1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=4.verified.txt
@@ -46,5 +46,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=6.verified.txt
index b8576cdcc..9e814a56e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=16_backingType=Long_implementations=6.verified.txt
@@ -46,5 +46,17 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
 }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=0.verified.txt
index 211608ccc..e6ffa4445 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=2.verified.txt
index 0e5d5ab0d..0c9135b1a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=4.verified.txt
index dd03a2d8d..8605ca5fe 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=6.verified.txt
index 50a48d3d2..4feba2c5f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=0.verified.txt
index 4685ac834..42b8a8ec0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=2.verified.txt
index d4a4846ab..8da182aa2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=4.verified.txt
index 19f743ef4..cdbc51c9c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=6.verified.txt
index 000b4ffbb..c023d0649 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=0.verified.txt
index 0e9376897..c073c7650 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=2.verified.txt
index 10bbe32e4..aa760cf96 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=4.verified.txt
index 9fc37bec1..3552f7914 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=6.verified.txt
index c4e157038..fe3734818 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=18_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=0.verified.txt
index 79c08cb83..906d4b7b4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=2.verified.txt
index 7007349de..fddb37d9d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=4.verified.txt
index ac02c972c..9df8d5fdf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=6.verified.txt
index 44e4aeb43..699cfc21a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=0.verified.txt
index c538a6642..0cde9dd78 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=2.verified.txt
index 2ce277d29..0ed369752 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=4.verified.txt
index 0499f4904..32ee14974 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=6.verified.txt
index 785bbf7c8..4850417a0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=0.verified.txt
index 7f919ca6d..6cc85f4a0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=2.verified.txt
index 67c43f9e7..10f0a5011 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=4.verified.txt
index d3cb95dff..b710408ed 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=6.verified.txt
index bc81e6e5a..4d6948dc2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=20_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=0.verified.txt
index 0de87fb62..160c6b487 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=2.verified.txt
index 377decb04..9ace30e53 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=4.verified.txt
index 21d487148..15bfc2887 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=6.verified.txt
index 039a56446..65e056cdc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=0.verified.txt
index 154e322c8..714eec551 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=2.verified.txt
index aec1376ca..503019128 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=4.verified.txt
index 2d025e868..762b6a0fc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=6.verified.txt
index d66ad02a2..4b9dc0abc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=0.verified.txt
index f630b8fdc..5e13914fc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=2.verified.txt
index 63b322c4d..ee4741b11 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=4.verified.txt
index 27d7fab62..b26a06e49 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=6.verified.txt
index 6c60c9a4e..05b75a554 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=22_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=0.verified.txt
index cec9f93ef..5d7608780 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=2.verified.txt
index 3c7808a44..0711536fe 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=4.verified.txt
index d6a13365a..ae8e3c9dd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=6.verified.txt
index aa05d4ee7..28a4815c7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=0.verified.txt
index 6fb2cde57..0262ca11b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=2.verified.txt
index 1bf5a3d86..efdcb73cf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=4.verified.txt
index 5e387eb65..a73def099 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=6.verified.txt
index 12c450152..35e009967 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=0.verified.txt
index 7c468580a..bbdc8a9f0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=2.verified.txt
index 9d632a09b..ad11301ec 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=4.verified.txt
index e266a957e..63af35ee0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=6.verified.txt
index bc610e4fb..0d5ebf549 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=24_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=0.verified.txt
index 34a3d770d..f45b1f450 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=2.verified.txt
index d40ed90d0..fdb22f031 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=4.verified.txt
index 0ccde754e..6f809e733 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=6.verified.txt
index 02b6e655d..8366fbabf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=0.verified.txt
index 232ec5018..fb3239ddb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=2.verified.txt
index bdd55ec7f..2cfd56295 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=4.verified.txt
index d7f636f5a..632555611 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=6.verified.txt
index d168f1af4..5660c702a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=0.verified.txt
index 8a67cb348..db64761d9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=2.verified.txt
index f8ca379d4..afbd67a55 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=4.verified.txt
index 797793d45..faa560751 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=6.verified.txt
index 2f5cc78e7..56e6afe96 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=26_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=0.verified.txt
index 0ff6594db..4b6806bbd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=2.verified.txt
index c97e7fbea..ac3a426a9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=4.verified.txt
index c17d1f458..ec171c3b1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=6.verified.txt
index c26af6cd9..b3084cd9a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=0.verified.txt
index 8e590dc5e..94c4b04ba 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=2.verified.txt
index 7822d351d..0ccf262a8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=4.verified.txt
index 7dedd98b2..ef2891303 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=6.verified.txt
index ae9e502f9..98487f8e7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=0.verified.txt
index 30f88d9e3..90fa8bdeb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=2.verified.txt
index 847ee0353..3440e588b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=4.verified.txt
index 15adbe86f..442cfea3e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=6.verified.txt
index e6b03e1a8..7be9aca49 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=28_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=0.verified.txt
index 188de8470..dc3929cb6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=0.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=2.verified.txt
index 8b109d9ff..435f7c839 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=2.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=4.verified.txt
index d90c01911..b69925df8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=4.verified.txt
@@ -50,6 +50,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=6.verified.txt
index 9594e104d..1f69e7f67 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Guid_implementations=6.verified.txt
@@ -50,6 +50,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=0.verified.txt
index 3bc5c3215..e0bf37abc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=0.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=2.verified.txt
index b968b9847..77b375a96 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=2.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=4.verified.txt
index 19f277cfb..364078c6f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=4.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=6.verified.txt
index 0f4c59fed..cfb77eadd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Int_implementations=6.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=0.verified.txt
index fd0e852d8..a85629341 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=0.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=2.verified.txt
index f13ee5ce6..5d0e852d9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=2.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=4.verified.txt
index 139126777..7c5e9e6d2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=4.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=6.verified.txt
index 2d4cefe80..e98fab7b0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=30_backingType=Long_implementations=6.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=0.verified.txt
index 03dbb3c9f..4d83946e7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=2.verified.txt
index 92da89a22..534c7d484 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=4.verified.txt
index c40b04700..d19ae5c24 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=6.verified.txt
index c093fdb66..92af2f9a7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=0.verified.txt
index 4b822535a..c90e895b3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=2.verified.txt
index aaf95ace8..76f5477dd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=4.verified.txt
index 19056a123..331bf8f85 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=6.verified.txt
index 4cd595320..a5fe2c326 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=0.verified.txt
index 70fe9a37c..70b0a4100 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=2.verified.txt
index f956875e8..7f24a9cd2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=4.verified.txt
index 369e4c9be..37fc99904 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=6.verified.txt
index 50e22ebed..e9e7e3f3c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=48_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=0.verified.txt
index 74b3f985d..8f75c8339 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=2.verified.txt
index bef56bd9d..8c88b56d2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=4.verified.txt
index 14f823999..0ecc54c35 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=6.verified.txt
index 02cc61e70..aaa214388 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=0.verified.txt
index 830548f68..8794757d3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=2.verified.txt
index 201c1d3a5..782e41d20 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=4.verified.txt
index 1e9fc8a8e..2cfaaa36b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=6.verified.txt
index af7322448..d4254aef5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=0.verified.txt
index c29cede8f..667607d73 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=2.verified.txt
index d1c68d776..d3ce07313 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=4.verified.txt
index 52391548d..574a7f594 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=6.verified.txt
index 9aa13e282..ab640efad 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=50_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=0.verified.txt
index 14287be4d..ca75f723c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=2.verified.txt
index b5725c055..4358bf07e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=4.verified.txt
index a805f7b7b..50d12c812 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=6.verified.txt
index ede5c8b7f..b93ece72d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=0.verified.txt
index 4f180eb82..6ff90c349 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=2.verified.txt
index 4888525b3..665564f97 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=4.verified.txt
index 8a3a54609..532c806e1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=6.verified.txt
index 130096ed3..6e0d71de3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=0.verified.txt
index f339a4a25..562213f44 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=2.verified.txt
index 1cb5fdb93..ffe31a04b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=4.verified.txt
index 41c24879b..78fd0eebe 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=6.verified.txt
index 287d01cde..80698bd68 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=52_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=0.verified.txt
index a80d8ce2a..e85097632 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=2.verified.txt
index 6be81c54d..c0e74b38b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=4.verified.txt
index c678364fd..f9ac3daa8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=6.verified.txt
index 5acb780e5..da86fedd1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=0.verified.txt
index 52d17d86e..cf737700c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=2.verified.txt
index 1e4487da4..84b8301e1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=4.verified.txt
index bf3455804..0e1eba0da 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=6.verified.txt
index 61f9826c6..ea4a5f2d3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=0.verified.txt
index 42bfe9f6c..107085193 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=2.verified.txt
index d6c26948e..54c6be448 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=4.verified.txt
index 069545233..b16962ea8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=6.verified.txt
index d9578fa9d..c82c1e7b0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=54_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=0.verified.txt
index 6e06a9bce..03c27b0a2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=2.verified.txt
index 6525ea8b1..8daf5c388 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=4.verified.txt
index 667ef258f..b18ed02b5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=6.verified.txt
index 94f17d951..8b5199295 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=0.verified.txt
index 09eeb88eb..290d9442c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=2.verified.txt
index 39051df41..5ee08800c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=4.verified.txt
index c7947cce6..bed614af5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=6.verified.txt
index cdcd225d3..df3f152be 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=0.verified.txt
index 8ed2eaf78..717313084 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=2.verified.txt
index f6c88de02..bcd887adf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=4.verified.txt
index 29253a73a..41f7d2623 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=6.verified.txt
index 2780b7afa..ea63bde82 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=56_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=0.verified.txt
index 5c7a44b39..7ebc71136 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=2.verified.txt
index b1fc6fe23..1f668e8cd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=4.verified.txt
index 93fb7f31f..38dc76f94 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=6.verified.txt
index 2d15bbe19..037e34bef 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=0.verified.txt
index 9f30e3c8a..01b155caa 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=2.verified.txt
index 1e251ae8d..316893167 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=4.verified.txt
index 90f3ae91b..bbce8ddc1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=6.verified.txt
index 9f70b1d05..91f7d9266 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=0.verified.txt
index e31445d23..d11db0489 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=2.verified.txt
index 4e087c276..6b6f42ebe 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=4.verified.txt
index 5132b77e5..171a29e42 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=6.verified.txt
index 9680ddd53..67ca07ad3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=58_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=0.verified.txt
index 3b7408bb7..9ddf536d9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=0.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=2.verified.txt
index 73c179774..a392a2572 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=2.verified.txt
@@ -48,6 +48,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=4.verified.txt
index cb93e2a05..58db5af7a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=4.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=6.verified.txt
index 1f0ef8bd0..5b8da8cb3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Guid_implementations=6.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=0.verified.txt
index bf50776b5..881e37b48 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=2.verified.txt
index c4b276926..47004d19c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=4.verified.txt
index 9bb9dc032..22f7e10cc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=6.verified.txt
index 874fde737..678d29fd5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Int_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=0.verified.txt
index 4a1be347a..d0c6ba0ac 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=0.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=2.verified.txt
index bb4e5ceda..0ba88b074 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=2.verified.txt
@@ -47,6 +47,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=4.verified.txt
index ff82b6f98..6fed64460 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=4.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=6.verified.txt
index 66cbcd9ab..dd2974370 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=60_backingType=Long_implementations=6.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=0.verified.txt
index 51a3cbe77..a4644a57e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=0.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=2.verified.txt
index 1e4936444..b52528d24 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=2.verified.txt
@@ -49,6 +49,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=4.verified.txt
index 2df62346d..03ec83f04 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=4.verified.txt
@@ -50,6 +50,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=6.verified.txt
index 69224101c..84a6ae596 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Guid_implementations=6.verified.txt
@@ -50,6 +50,16 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=0.verified.txt
index a2f7eed1b..57833418a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=0.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=2.verified.txt
index 9e659a8c6..da90e1851 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=2.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=4.verified.txt
index 9c5c16f05..036d895e0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=4.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=6.verified.txt
index 8eac88355..9baed7e8a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Int_implementations=6.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=0.verified.txt
index 262c67704..fbfa642a4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=0.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=2.verified.txt
index 6a7062db6..7b46910c6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=2.verified.txt
@@ -48,6 +48,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=4.verified.txt
index c89552402..a6e4ed71f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=4.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=6.verified.txt
index 888756220..514772b0f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=Some.Namespace_converter=62_backingType=Long_implementations=6.verified.txt
@@ -49,6 +49,18 @@ namespace Some.Namespace
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=0.verified.txt
index 508208c37..ef7ede4d0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=0.verified.txt
@@ -44,4 +44,14 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=2.verified.txt
index bd295d6c1..e0c941562 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=2.verified.txt
@@ -44,4 +44,14 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=4.verified.txt
index 218054f51..ff64a2a74 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=4.verified.txt
@@ -45,4 +45,14 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=6.verified.txt
index 2c39146fd..80d952831 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Guid_implementations=6.verified.txt
@@ -45,4 +45,14 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int.verified.txt
index a2b380f84..3ca4122a8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int.verified.txt
@@ -41,4 +41,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=0.verified.txt
index d3e50467b..566eb709d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=0.verified.txt
@@ -43,4 +43,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=2.verified.txt
index 57b00caf5..45af1688a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=2.verified.txt
@@ -43,4 +43,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=4.verified.txt
index 3ad892329..75ed8f586 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=4.verified.txt
@@ -44,4 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=6.verified.txt
index d6d3caa9d..6097425f6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Int_implementations=6.verified.txt
@@ -44,4 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long.verified.txt
index 2caf566c2..572f4b195 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long.verified.txt
@@ -41,4 +41,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=0.verified.txt
index cb5754863..744ddbaac 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=0.verified.txt
@@ -43,4 +43,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=2.verified.txt
index 57a90b071..a1383dcf4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=2.verified.txt
@@ -43,4 +43,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=4.verified.txt
index a745c3f85..d66d3c054 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=4.verified.txt
@@ -44,4 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=6.verified.txt
index 69bd91feb..8c1574ced 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=16_backingType=Long_implementations=6.verified.txt
@@ -44,4 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
     }
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=0.verified.txt
index a5b390ae9..bd8c3f01a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=2.verified.txt
index e573e26b8..f810c49f1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=4.verified.txt
index 47e26f681..66774fec7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=6.verified.txt
index 869f212bd..bcf131bbd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int.verified.txt
index 104f4e705..ac22846d3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=0.verified.txt
index 6016a2f1b..d02834e78 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=2.verified.txt
index f2562c2ed..62798e9dc 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=4.verified.txt
index 75f28ad18..22aec1220 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=6.verified.txt
index e14dde339..f2ce33a84 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long.verified.txt
index b7d0c6563..a264855ac 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=0.verified.txt
index 8a123daa5..cf03d0c20 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=2.verified.txt
index 66632ba08..4616475f0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=4.verified.txt
index 76acb43d2..ce90f863e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=6.verified.txt
index ef65e5b9d..eb7c4c621 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=18_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=0.verified.txt
index f86ca50f7..f6d7a83da 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=2.verified.txt
index 67cee8d3f..c654a9825 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=4.verified.txt
index 66d5c3199..51bc57e82 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=6.verified.txt
index 855f85d33..8801ed3b4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int.verified.txt
index 34ae45ac7..9175d7886 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=0.verified.txt
index 4f9bb59c7..39b3f2fc7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=2.verified.txt
index cf0ea31f5..b4936069c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=4.verified.txt
index b657266e5..11a9c55fa 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=6.verified.txt
index 8c5cbf33c..da65fd663 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long.verified.txt
index b431fa996..2f16a3ad5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=0.verified.txt
index 6718cc52c..35a054575 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=2.verified.txt
index ff4ab817f..3807db3bb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=4.verified.txt
index 6ca5cdcb4..e1feb397a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=6.verified.txt
index 62179e110..844cb6ee9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=20_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=0.verified.txt
index 5e1569b6b..2ad8ed6e2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=2.verified.txt
index 90e0deecc..29e986f80 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=4.verified.txt
index 3757efcdd..7c054569c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=6.verified.txt
index e397af5cf..be57e32ca 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int.verified.txt
index 1f2063b71..7e7cce0c7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=0.verified.txt
index 5671bb03a..4f03e7c85 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=2.verified.txt
index 070ac005d..a92798427 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=4.verified.txt
index d1700fa01..aea1dd0d1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=6.verified.txt
index 9c2b9ddaf..c684edb16 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long.verified.txt
index 454a95c35..a92c9c434 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=0.verified.txt
index 74e104457..a7823ab1f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=2.verified.txt
index 6c9ac56cd..58fa9fe89 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=4.verified.txt
index db563c670..394661289 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=6.verified.txt
index 3492a3860..943575dc4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=22_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=0.verified.txt
index 572994e92..0b2e6886b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=2.verified.txt
index e9deef96b..5a63cfe02 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=4.verified.txt
index aebeabd1b..7c5b4527f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=6.verified.txt
index 88e82cd4c..0ed672bf7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int.verified.txt
index 07ad615c1..c99d4fa38 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=0.verified.txt
index 9d057d1d5..663e06b7b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=2.verified.txt
index 1f67e3e4b..2647688f2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=4.verified.txt
index fed6ab8b0..4d165bd0b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=6.verified.txt
index 54704e2a9..b6d83bd02 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long.verified.txt
index 8b845292b..73a2c785d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=0.verified.txt
index c9e25364d..28c3f1b74 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=2.verified.txt
index b42ebab87..44f5101bb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=4.verified.txt
index f340a7c78..937d42123 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=6.verified.txt
index d9fcaa98a..7e5f9e053 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=24_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdSystemTextJsonConverter : System.Text.Json.Serialization.JsonConverter<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=0.verified.txt
index c1552f596..7c328d66c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=2.verified.txt
index 764750b7a..be6c11137 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=4.verified.txt
index ef0ee8b70..aaacfbb1d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=6.verified.txt
index 15719bcb6..42af35504 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int.verified.txt
index d014cc176..15e4f426b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=0.verified.txt
index 3edba7f5e..5a4c0a875 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=2.verified.txt
index 4fa0b420d..8d174403e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=4.verified.txt
index e1c40915d..ca8489b18 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=6.verified.txt
index c261528c6..f4f3cfd04 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long.verified.txt
index 36d28ac01..6e3f90cec 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=0.verified.txt
index 16cf6d87e..eebd881e4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=2.verified.txt
index 6f5ac7b23..642f67b0d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=4.verified.txt
index 4bbcc932a..19c3d9d47 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=6.verified.txt
index f3eb336e3..867c3e77e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=26_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=0.verified.txt
index ffa130f3d..042b821da 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=2.verified.txt
index 84879e5ed..6e36a8b66 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=4.verified.txt
index 28f65ef8c..7ec5473be 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=6.verified.txt
index 19344a1c3..fc3d4002d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int.verified.txt
index 1e66ae923..18ba938a8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=0.verified.txt
index f1a2afbf1..54d66b49b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=2.verified.txt
index 18c5e7a5d..c673fc234 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=4.verified.txt
index d7f221f75..1a01f7bc7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=6.verified.txt
index 5674055a8..dfeca208b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long.verified.txt
index 491f063c8..9cd798aa4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=0.verified.txt
index fff8e297c..e3a0453ac 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=2.verified.txt
index 4d6f17df0..0798aa3ff 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=4.verified.txt
index c5f5fbcad..7684d445b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=6.verified.txt
index 036787a5a..fa963097a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=28_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdNewtonsoftJsonConverter : Newtonsoft.Json.JsonConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=0.verified.txt
index 957c09cb5..14707626e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=2.verified.txt
index 22978188c..eb17b70d5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=4.verified.txt
index aad522deb..6dd6ad565 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=6.verified.txt
index 80bbfe1a5..625725317 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int.verified.txt
index 79a268679..a655cb303 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=0.verified.txt
index da8e84ba4..63f0d9543 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=2.verified.txt
index a89f12ed3..00ea575a8 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=4.verified.txt
index 7f20719fe..ddcb23e01 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=6.verified.txt
index 255308e13..8d8af9ef9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long.verified.txt
index 584c09c2f..c741350c7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=0.verified.txt
index 22a36bb65..812413321 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=2.verified.txt
index 3821a625f..fcea4ac4e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=4.verified.txt
index 878302f71..2fcef8951 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=6.verified.txt
index d899d420a..2d5562390 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=30_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         class MyTestIdTypeConverter : System.ComponentModel.TypeConverter
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=0.verified.txt
index d7f316217..0168f8ae1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=0.verified.txt
@@ -44,6 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=2.verified.txt
index 298bcbcc8..f7e7fe3b9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=2.verified.txt
@@ -44,6 +44,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=4.verified.txt
index 812a1b5f4..e468489b4 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=4.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=6.verified.txt
index 2ab13c905..66687dab5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Guid_implementations=6.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=0.verified.txt
index a5f5102e4..12c0f145f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=0.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=2.verified.txt
index d9d59241a..c45158457 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=2.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=4.verified.txt
index 4a3a7fc71..0e807d6c5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=4.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=6.verified.txt
index aecca7dd5..66a340ceb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Int_implementations=6.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long.verified.txt
index a4e07c250..c573110c2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long.verified.txt
@@ -41,6 +41,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=0.verified.txt
index e4f6e79db..ebf749044 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=0.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=2.verified.txt
index 094e8c23a..9c2f6d6a7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=2.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=4.verified.txt
index 42f4d0210..f17c512ea 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=4.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=6.verified.txt
index 1f0d97b99..f74fb4d1c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=48_backingType=Long_implementations=6.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=0.verified.txt
index 73747b40e..d5fb2b23a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=2.verified.txt
index 65cc2b302..564d659ec 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=4.verified.txt
index d6de41627..fb3767baf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=6.verified.txt
index cc5f8ebe1..09f068653 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int.verified.txt
index 3321eb092..22c109e4c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=0.verified.txt
index 327e8c897..d992ce5eb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=2.verified.txt
index 0bd6478f4..f607f400d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=4.verified.txt
index 1113add5e..dc6533194 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=6.verified.txt
index 277861014..f414d2247 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long.verified.txt
index 0e468883f..c1cb6047b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=0.verified.txt
index c2a005a0a..f32450fa5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=2.verified.txt
index c27caa895..c51734bb6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=4.verified.txt
index 249cfaa30..b6c7a3898 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=6.verified.txt
index a6ee535d0..c72505367 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=50_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=0.verified.txt
index a22b1513b..44f46ddc3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=2.verified.txt
index 5fae89961..f653740ea 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=4.verified.txt
index 809e649a4..a00c61756 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=6.verified.txt
index 541e7f9f5..5de2dee6b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int.verified.txt
index e4a1006a2..e4f440951 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=0.verified.txt
index cc21919b7..df66b2403 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=2.verified.txt
index 067afdeaf..cff9de824 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=4.verified.txt
index 977ab2987..e6e0d4f2b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=6.verified.txt
index 7e54c92f3..c608cf5c2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long.verified.txt
index a41ebcae0..3a22c90e6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=0.verified.txt
index c46d8b99c..f5a76d0f5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=2.verified.txt
index 44d62b358..f7047407d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=4.verified.txt
index 8ea7a51aa..a70014d98 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=6.verified.txt
index 2d1d13de7..d81a79456 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=52_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=0.verified.txt
index bd4ae8b8e..1ddc15a4b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=2.verified.txt
index 2359feffa..cddf080ea 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=4.verified.txt
index 468a3abbf..97ecaf9d6 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=6.verified.txt
index 603d6c184..f34bde4bb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int.verified.txt
index 986175d61..839e9602c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=0.verified.txt
index ded8f2ab7..de3f24162 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=2.verified.txt
index 05611cab9..4b77f7f2e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=4.verified.txt
index 753376c71..049744e37 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=6.verified.txt
index ba470f0ae..08493c10f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long.verified.txt
index ac1b8ae9f..8b0d8bbfd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=0.verified.txt
index a8f0ac31d..b237eba54 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=2.verified.txt
index bfda82ce1..05b992daa 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=4.verified.txt
index b5fcd80eb..2c0074bbf 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=6.verified.txt
index 983cd47f5..cd973154b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=54_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=0.verified.txt
index c7c6026fa..74b1fecf3 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=0.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=2.verified.txt
index 83e7701cf..ce4cdee0d 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=2.verified.txt
@@ -45,6 +45,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=4.verified.txt
index 25a5bdd7f..db40ab86b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=4.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=6.verified.txt
index 2f3fc1848..0673a7469 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Guid_implementations=6.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int.verified.txt
index 6f62e3ac7..4bd1a235f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=0.verified.txt
index c57f81435..371c5691f 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=2.verified.txt
index d0646dc1f..47740b084 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=4.verified.txt
index 37da18f5d..91b5d11ce 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=6.verified.txt
index 5cc2aa633..ff6f0d53a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Int_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long.verified.txt
index 68ad79993..f33906a87 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long.verified.txt
@@ -42,6 +42,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=0.verified.txt
index fee9af854..994124ad0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=0.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=2.verified.txt
index bcd1d22f5..37873a027 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=2.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=4.verified.txt
index f83fe861f..53b83db23 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=4.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=6.verified.txt
index ae9b13330..3cfc508a1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=56_backingType=Long_implementations=6.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=0.verified.txt
index 32c0c0bf3..ca164bd96 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=2.verified.txt
index 421db02d3..7efa97f8b 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=4.verified.txt
index 40f88a91f..6af54d1f1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=6.verified.txt
index dfc48fcb4..90f520cd2 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int.verified.txt
index 1c933c569..aed0ca33c 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=0.verified.txt
index d3928373d..13765ae97 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=2.verified.txt
index 2a2c93ce9..a9f6f99a0 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=4.verified.txt
index 61aa61a65..36041782e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=6.verified.txt
index fa2294ac1..6ac5ce1b5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long.verified.txt
index 4e92975c3..5cc618bd1 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=0.verified.txt
index c518dc45b..cb19864db 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=2.verified.txt
index 82303f637..e8d68c5ff 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=4.verified.txt
index 52ead0c20..af8f3d995 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=6.verified.txt
index 60cef5093..266e40706 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=58_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=0.verified.txt
index 708ea8be0..a98a60930 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=0.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=2.verified.txt
index 19b9b069f..201ab57e9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=2.verified.txt
@@ -46,6 +46,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=4.verified.txt
index 3790316cb..350e5f073 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=4.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=6.verified.txt
index fe4e5e00a..2a1234e37 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Guid_implementations=6.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int.verified.txt
index 51d843c40..44cc6f657 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=0.verified.txt
index 4a0f22752..e2e89b0bd 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=2.verified.txt
index 1bb8a428f..e6f9db106 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=4.verified.txt
index 10f78b6e0..9c0727e64 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=6.verified.txt
index 72f8c2993..eb3d106a9 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Int_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long.verified.txt
index 17215bf51..8b97b596e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long.verified.txt
@@ -43,6 +43,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=0.verified.txt
index 03ed0affb..1b6500dd5 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=0.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=2.verified.txt
index 4b8095558..c148285fe 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=2.verified.txt
@@ -45,6 +45,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=4.verified.txt
index 0d57ec71d..1e5d9386a 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=4.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=6.verified.txt
index b241c0dae..b33e6cc70 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=60_backingType=Long_implementations=6.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=0.verified.txt
index 4cd97ce30..7b65d9372 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=0.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=2.verified.txt
index 71ea2e49a..cac2ba620 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=2.verified.txt
@@ -47,6 +47,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=4.verified.txt
index 72f4e6109..543e32150 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=4.verified.txt
@@ -48,6 +48,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=6.verified.txt
index d7a3ed3e7..660fa0a62 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Guid_implementations=6.verified.txt
@@ -48,6 +48,16 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        { 
+            public override bool GeneratesTemporaryValues => false;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            { 
+                return MyTestId.New();
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int.verified.txt
index b7da8e3a0..f9d3c85fa 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=0.verified.txt
index 6d0e78a37..5601c8585 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=0.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=2.verified.txt
index dd6174a7a..483bb8965 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=2.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=4.verified.txt
index a9fbb7dad..26de10c38 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=4.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=6.verified.txt
index e7affbacb..36bb54a66 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Int_implementations=6.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private int _id = int.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long.verified.txt
index a6cd6a96e..68036f7eb 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long.verified.txt
@@ -44,6 +44,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                _id += 1;
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=0.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=0.verified.txt
index fda121d39..332274827 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=0.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=0.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=2.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=2.verified.txt
index 2668f3565..fc63bcb93 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=2.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=2.verified.txt
@@ -46,6 +46,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=4.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=4.verified.txt
index 8b214d048..c39f61d0e 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=4.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=4.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {
diff --git a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=6.verified.txt b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=6.verified.txt
index 0a464e952..801f5e4e7 100644
--- a/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=6.verified.txt
+++ b/test/StronglyTypedIds.Tests/Snapshots/SourceGenerationHelperSnapshotTests.GeneratesIdCorrectly_ns=_converter=62_backingType=Long_implementations=6.verified.txt
@@ -47,6 +47,18 @@
                     mappingHints
                 ) { }
         }
+        
+        public class EfCoreValueGenerator : Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator<MyTestId>
+        {
+            private long _id = long.MinValue;
+            public override bool GeneratesTemporaryValues => true;
+
+            public override MyTestId Next(Microsoft.EntityFrameworkCore.ChangeTracking.EntityEntry entry)
+            {
+                System.Threading.Interlocked.Increment(ref _id);
+                return new MyTestId(_id);
+            }
+        }
 
         public class DapperTypeHandler : Dapper.SqlMapper.TypeHandler<MyTestId>
         {