static examples (#45642)

* Update access-modifiers.md

Added description for file access type modifier

* Update csrefKeywordsModifiers.cs

Create examples for Local and Lamba expressions

* Update static.md

Reference new examples in static doc

* Update csrefKeywordsModifiers.csproj

Update Target Framework

Author: bigboybamo

docs/csharp/language-reference/keywords/static.md

@@ -17,8 +17,12 @@ Use the `static` modifier to declare a static member, which belongs to the type
 
 You can add the `static` modifier to a [local function](../../programming-guide/classes-and-structs/local-functions.md). A static local function can't capture local variables or instance state.
 
+[!code-csharp[csrefKeywordsModifiers#28](~/samples/snippets/csharp/VS_Snippets_VBCSharp/csrefKeywordsModifiers/CS/csrefKeywordsModifiers.cs#28)]
+
 You can add the `static` modifier to a [lambda expression](../operators/lambda-expressions.md) or [anonymous method](../operators/delegate-operator.md). A static lambda or anonymous method can't capture local variables or instance state.
 
+[!code-csharp[csrefKeywordsModifiers#29](~/samples/snippets/csharp/VS_Snippets_VBCSharp/csrefKeywordsModifiers/CS/csrefKeywordsModifiers.cs#29)]
+
 ## Example - static class
 
 The following class is declared as `static` and contains only `static` methods:

samples/snippets/csharp/VS_Snippets_VBCSharp/csrefKeywordsModifiers/CS/csrefKeywordsModifiers.cs

@@ -818,4 +818,46 @@ public static void Main(string[] args)
         }
         //</snippet27>
     } 
+
+      //<snippet28>
+  class Calc1
+  {
+      public void CalculateSum()
+      {
+          int a = 3;
+          int b = 7;
+
+          // Static local function - cannot access 'a' or 'b' directly
+          static int Add(int x, int y)
+          {
+              return x + y;
+          }
+
+          int result = Add(a, b); 
+          Console.WriteLine($"Sum: {result}");
+      }
+  }
+    /*
+   Output:
+   Sum: 10
+   */
+  //</snippet28>
+
+
+  //<snippet29>
+  class Calc2
+  {
+      static void Main()
+      {
+          Func<int, int, int> add = static (a, b) => a + b;
+
+          int result = add(5, 10);
+          Console.WriteLine($"Sum: {result}");
+      }
+  }
+  /*
+  Output:
+  Sum: 15
+  */
+  //</snippet29>
 }

samples/snippets/csharp/VS_Snippets_VBCSharp/csrefKeywordsModifiers/CS/csrefKeywordsModifiers.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>net48</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <StartupObject>csrefKeywordsModifiers.UsingTest</StartupObject>
   </PropertyGroup>