示例

// CS0437_a.cs
// compile with: /target:library
namespace Util 
{
   public class A {
      public void Test() {
         System.Console.WriteLine("CS0437_a.cs");
      }
   }
}

// CS0437_b.cs
// compile with: /reference:CS0437_a.dll /W:2
// CS0437 expected
class Util 
{
   public class A { 
      public void Test() {
         System.Console.WriteLine("CS0437_b.cs");
      }
   }
}

public class Test 
{
   public static void Main() 
   {
      Util.A x = new Util.A();
      x.Test();
   }
}