Compiler Error CS0113

A member 'function' marked as override cannot be marked as new or virtual

It is mutually exclusive to mark a method with the new and override keywords.

The following sample generates CS0113:

// CS0113.cs  
namespace MyNamespace  
{  
   abstract public class MyClass  
   {  
      public abstract void Foo();  
   }  
  
   public class MyClass2 : MyClass  
   {  
      override new public void Foo()   // CS0113, remove new keyword  
      {  
      }  
  
      public static int Main()  
      {  
         return 0;  
      }  
   }  
}