C#

Hashtable rooms = new Hashtable(
  new CaseInsensitiveHashCodeProvider(),
  new CaseInsensitiveComparer();
rooms.Add(gr1.Name, gr1);
rooms.Add(gr2.Name, gr2);

return rooms["GameRoom1"] as GameRoom;

.method private hidebysig instance void  Example() cil managed
{
  // Code size       69 (0x45)
  .maxstack  2
  .locals init (valuetype [mscorlib]System.Collections.DictionaryEntry V_0,
           class [mscorlib]System.Collections.IDictionaryEnumerator V_1,
           class [mscorlib]System.IDisposable V_2)
  IL_0000:  ldarg.0
  IL_0001:  ldfld      class [mscorlib]System.Collections.Hashtable Test::table
"color: rgba(255, 0, 0, 1)">  IL_0006:  callvirt   instance class [mscorlib]System.Collections.IDictionaryEnumerator [mscorlib]System.Collections.Hashtable::GetEnumerator()
  IL_000b:  stloc.1
  .try
  {
    IL_000c:  br.s       IL_0029
    IL_000e:  ldloc.1
"color: rgba(255, 0, 0, 1)">    IL_000f:  callvirt   instance object [mscorlib]System.Collections.IEnumerator::get_Current()
    IL_0014:  unbox      [mscorlib]System.Collections.DictionaryEntry
    IL_0019:  ldobj      [mscorlib]System.Collections.DictionaryEntry
    IL_001e:  stloc.0
    IL_001f:  ldstr      "test"
    IL_0024:  call       void [mscorlib]System.Console::WriteLine(string)
    IL_0029:  ldloc.1
    IL_002a:  callvirt   instance bool [mscorlib]System.Collections.IEnumerator::MoveNext()
    IL_002f:  brtrue.s   IL_000e
    IL_0031:  leave.s    IL_0044
  }  // end .try
  finally
  {
    IL_0033:  ldloc.1
    IL_0034:  isinst     [mscorlib]System.IDisposable
    IL_0039:  stloc.2
    IL_003a:  ldloc.2
    IL_003b:  brfalse.s  IL_0043
    IL_003d:  ldloc.2
    IL_003e:  callvirt   instance void [mscorlib]System.IDisposable::Dispose()
    IL_0043:  endfinally
  }  // end handler
  IL_0044:  ret
} // end of method Test::Example

An attempt to call Load on a target application domain that is not the current application domain will result in a successful load of the assembly in the target application domain. Since an Assembly is not MarshalByRefObject, when this method attempts to return the Assembly for the loaded assembly to the current application domain, the common language runtime will try to load the assembly into the current application domain and the load might fail. The assembly that is loaded into the current application domain might be different from the assembly that was loaded first if the path settings for the two application domains are different.

public class Manager
{
  readonly ItemCollection items = new ItemCollection();

  public class ItemCollection
  {
    internal ItemCollection(){}
  }

  public ItemCollection Items {get {return items;}}

}