using System.Collections.Generic;
#endif
using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
#if NET_2_0
namespace System {
+#if NET_2_0
+ [ComVisible (true)]
+#endif
public static class Nullable {
public static int Compare<T> (Nullable<T> left, Nullable<T> right) where T: struct
{