NGWS SDK Documentation  

This is preliminary documentation and subject to change.
To comment on this topic, please send us email at ngwssdk@microsoft.com. Thanks!

Compiler Error CS0077

The as operator must be used with a reference type ('type' is a value type)

The as operator was passed a value type. Because as can return null, it can only be passed reference types.

The following sample generates CS0077:

using System;

class C {
}

struct S {
}

class M {
   public static void Main() {
      object o1, o2;
      C c;
      S s;

      o1 = new C();
      o2 = new S();


      s = o2 as S;  // CS0077, S is not a reference type.
      // try the following line instead
      // c = o1 as C;
   }
}