Emitted IL

emitted.il

// method line 2
    .method public static hidebysig 
           default void Main (string[] args)  cil managed 
    {
        // Method begins at RVA 0x20f4
	.entrypoint
	// Code size 135 (0x87)
	.maxstack 10
	.locals init (
		string	V_0,
		string	V_1,
		class [mscorlib]System.Collections.Generic.Dictionary`2<string, int32>	V_2,
		int32	V_3)
	IL_0000:  ldstr "Hello"
	IL_0005:  stloc.0 
	IL_0006:  ldloc.0 
	IL_0007:  stloc.1 
	IL_0008:  ldloc.1 
	IL_0009:  brfalse IL_0077

	IL_000e:  ldsfld class [mscorlib]System.Collections.Generic.Dictionary`2<string,int32> Test::'<>f__switch$map0'
	IL_0013:  brtrue IL_003d

	IL_0018:  ldc.i4.2 
	IL_0019:  newobj instance void class [mscorlib]System.Collections.Generic.Dictionary`2<string, int32>::'.ctor'(int32)
	IL_001e:  stloc.2 
	IL_001f:  ldloc.2 
	IL_0020:  ldstr "Hello"
	IL_0025:  ldc.i4.0 
	IL_0026:  callvirt instance void class [mscorlib]System.Collections.Generic.Dictionary`2<string, int32>::Add(!0, !1)
	IL_002b:  ldloc.2 
	IL_002c:  ldstr "World"
	IL_0031:  ldc.i4.1 
	IL_0032:  callvirt instance void class [mscorlib]System.Collections.Generic.Dictionary`2<string, int32>::Add(!0, !1)
	IL_0037:  ldloc.2 
	IL_0038:  stsfld class [mscorlib]System.Collections.Generic.Dictionary`2<string,int32> Test::'<>f__switch$map0'
	IL_003d:  ldsfld class [mscorlib]System.Collections.Generic.Dictionary`2<string,int32> Test::'<>f__switch$map0'
	IL_0042:  ldloc.1 
	IL_0043:  ldloca.s 3
	IL_0045:  callvirt instance bool class [mscorlib]System.Collections.Generic.Dictionary`2<string, int32>::TryGetValue(!0, [out] !1&)
	IL_004a:  brfalse IL_0077

	IL_004f:  ldloc.3 
	IL_0050:  brfalse IL_0061

	IL_0055:  ldloc.3 
	IL_0056:  ldc.i4.1 
	IL_0057:  beq IL_006c

	IL_005c:  br IL_0077

	IL_0061:  ldc.i4.1 
	IL_0062:  call void class [mscorlib]System.Console::WriteLine(bool)
	IL_0067:  br IL_0086

	IL_006c:  ldc.i4.0 
	IL_006d:  call void class [mscorlib]System.Console::WriteLine(bool)
	IL_0072:  br IL_0086

	IL_0077:  ldstr "default"
	IL_007c:  call void class [mscorlib]System.Console::WriteLine(string)
	IL_0081:  br IL_0086

	IL_0086:  ret 
    } // end of method Test::Main

test.cs

using System;

class Test {
        public static void Main (string[] args) {
                string h = "Hello";

                switch (h) {
                        case "Hello":
                                Console.WriteLine (true);
                                break;
                        case "World":
                                Console.WriteLine (false);
                                break;
                        default:
                                Console.WriteLine ("default");
                                break;
                }
        }
}