Explicit interface implementation cannot be virtual

Question

For the record, I\'ve already seen this connect item but I can\'t really understand what would be the problem in supporting this.

Say I have the following code:

Answer 1

A method implementating interface explicitly has a special visibility scope = you cannot acces it from another method unless you cast "this" to the target interface type. I suppose it was the reason why virtual specifier is not supported - you cannot override method that is not part of the normal object interface (private/protected/public).

This is my workaround:

public class Base : IInterface
{    
   protected virtual void Method()
   {

   }

   void IInterface.Method()    
   {        
       this.Method()
   }
 }


 public class Derived : Base
 {
     protected override void Method()
     {
     }
 }