handle assembly loading for full framework

Author: krmr

RazorEngineCore/RazorEngineCompilationOptions.cs

@@ -5,17 +5,13 @@
 
 namespace RazorEngineCore
 {
+    using System;
+
+    using Microsoft.CodeAnalysis.CSharp.Syntax;
+
     public class RazorEngineCompilationOptions
     {
-        public HashSet<Assembly> ReferencedAssemblies { get; set; } = new HashSet<Assembly>()
-        {
-            typeof(object).Assembly,
-            Assembly.Load(new AssemblyName("Microsoft.CSharp")),
-            typeof(RazorEngineTemplateBase).Assembly,
-            Assembly.Load(new AssemblyName("System.Runtime")),
-            Assembly.Load(new AssemblyName("System.Linq")),
-            Assembly.Load(new AssemblyName("System.Linq.Expressions"))
-        };
+        public HashSet<Assembly> ReferencedAssemblies { get; set; } = DefaultReferencedAssemblies();
 
         public HashSet<MetadataReference> MetadataReferences { get; set; } = new HashSet<MetadataReference>();
         public string TemplateNamespace { get; set; } = "TemplateNamespace";
@@ -31,8 +27,44 @@ public RazorEngineCompilationOptions()
             // Loading netstandard explicitly causes runtime error on Linux/OSX
             if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
             {
-                this.ReferencedAssemblies.Add(Assembly.Load(new AssemblyName("netstandard")));
+                if (RuntimeInformation.FrameworkDescription.StartsWith(".NET Framework", StringComparison.OrdinalIgnoreCase))
+                {
+                    this.ReferencedAssemblies.Add(
+                        Assembly.Load(
+                            new AssemblyName(
+                                "netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51")));
+                }
+                else
+                {
+                    this.ReferencedAssemblies.Add(Assembly.Load(new AssemblyName("netstandard")));
+                }
+            }
+        }
+
+        private static HashSet<Assembly> DefaultReferencedAssemblies()
+        {
+            if (RuntimeInformation.FrameworkDescription.StartsWith(".NET Framework", StringComparison.OrdinalIgnoreCase))
+            {
+                return new HashSet<Assembly>()
+                           {
+                               typeof(object).Assembly,
+                               Assembly.Load(new AssemblyName("Microsoft.CSharp, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")),
+                               typeof(RazorEngineTemplateBase).Assembly,
+                               typeof(System.Runtime.GCSettings).Assembly,
+                               typeof(System.Linq.Enumerable).Assembly,
+                               typeof(System.Linq.Expressions.Expression).Assembly
+                           };
             }
+
+            return new HashSet<Assembly>()
+                       {
+                           typeof(object).Assembly,
+                           Assembly.Load(new AssemblyName("Microsoft.CSharp")),
+                           typeof(RazorEngineTemplateBase).Assembly,
+                           Assembly.Load(new AssemblyName("System.Runtime")),
+                           Assembly.Load(new AssemblyName("System.Linq")),
+                           Assembly.Load(new AssemblyName("System.Linq.Expressions"))
+                       };
         }
     }
 }