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    copied!<p>It seems to be a bug or unnecessary:</p> <p>I run you exemple in IL lang:</p> <pre><code>.method public hidebysig instance void InstanceMethod () cil managed { // Method begins at RVA 0x2074 // Code size 63 (0x3f) .maxstack 4 .locals init ( [0] class ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1' 'CS$&lt;&gt;8__locals2' ) IL_0000: newobj instance void ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::.ctor() IL_0005: stloc.0 IL_0006: ldloc.0 IL_0007: ldarg.0 IL_0008: stfld class ConsoleApplication1.Program/Foo ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::'&lt;&gt;4__this' //Make ref to this IL_000d: nop IL_000e: ldloc.0 IL_000f: ldc.r8 42 IL_0018: ldc.r8 1 IL_0021: call float64 [mscorlib]System.Math::Pow(float64, float64) IL_0026: stfld float64 ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::capturedVariable IL_002b: ldarg.0 IL_002c: ldloc.0 IL_002d: ldftn instance void ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::'&lt;InstanceMethod&gt;b__0'() IL_0033: newobj instance void [mscorlib]System.Action::.ctor(object, native int) IL_0038: stfld class [mscorlib]System.Action ConsoleApplication1.Program/Foo::_field IL_003d: nop IL_003e: ret } // end of method Foo::InstanceMethod </code></pre> <p>Example 2:</p> <pre><code>class Program { static void Main(string[] args) { } class Foo { private Action _field; public void InstanceMethod() { var capturedVariable = Math.Pow(42, 1); _field = () =&gt; Foo2.StaticMethod(capturedVariable); //Foo2 } private static void StaticMethod(double arg) { } } class Foo2 { internal static void StaticMethod(double arg) { } } } </code></pre> <p>in cl: (Note !! now the this reference is gone !)</p> <pre><code>public hidebysig instance void InstanceMethod () cil managed { // Method begins at RVA 0x2074 // Code size 56 (0x38) .maxstack 4 .locals init ( [0] class ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1' 'CS$&lt;&gt;8__locals2' ) IL_0000: newobj instance void ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::.ctor() IL_0005: stloc.0 IL_0006: nop //No this pointer IL_0007: ldloc.0 IL_0008: ldc.r8 42 IL_0011: ldc.r8 1 IL_001a: call float64 [mscorlib]System.Math::Pow(float64, float64) IL_001f: stfld float64 ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::capturedVariable IL_0024: ldarg.0 //No This ref IL_0025: ldloc.0 IL_0026: ldftn instance void ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::'&lt;InstanceMethod&gt;b__0'() IL_002c: newobj instance void [mscorlib]System.Action::.ctor(object, native int) IL_0031: stfld class [mscorlib]System.Action ConsoleApplication1.Program/Foo::_field IL_0036: nop IL_0037: ret } </code></pre> <p>Exemple 3:</p> <pre><code>class Program { static void Main(string[] args) { } static void Test(double arg) { } class Foo { private Action _field; public void InstanceMethod() { var capturedVariable = Math.Pow(42, 1); _field = () =&gt; Test(capturedVariable); } private static void StaticMethod(double arg) { } } } </code></pre> <p>in IL: (This pointer is back)</p> <pre><code>IL_0006: ldloc.0 IL_0007: ldarg.0 IL_0008: stfld class ConsoleApplication1.Program/Foo ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::'&lt;&gt;4__this' //Back again. </code></pre> <p>And in all three cases the method-b__0() - look the same:</p> <pre><code>instance void '&lt;InstanceMethod&gt;b__0' () cil managed { // Method begins at RVA 0x2066 // Code size 13 (0xd) .maxstack 8 IL_0000: ldarg.0 IL_0001: ldfld float64 ConsoleApplication1.Program/Foo/'&lt;&gt;c__DisplayClass1'::capturedVariable IL_0006: call void ConsoleApplication1.Program/Foo::StaticMethod(float64) //Your example IL_0006: call void ConsoleApplication1.Program/Foo2::StaticMethod(float64)//Example 2 IL_0006: call void ConsoleApplication1.Program::Test(float64) //Example 3 IL_000b: nop IL_000c: ret } </code></pre> <p>And in all 3 cases there is an reference to an static method, so it makes it more odd. So after this litle analys, i will say its an bug / for no good. !</p>
 

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