Compiler Error CS0500

'class member' cannot declare a body because it is marked abstract

An abstract method cannot contain its implementation.

The following sample generates CS0500:

// CS0500.cs  
namespace x  
{  
   abstract public class clx  
   {  
      abstract public void f(){}   // CS0500  
      // try the following line instead  
      // abstract public void f();  
   }  
  
   public class cly  
   {  
      public static int Main()  
      {  
         return 0;  
      }  
   }  
}