Program for inheriting a class that implements an interface

using System;
interface Display
{
 void Print();
}
class B : Display
{
 public void Print()
 {
  Console.WriteLine("Base Display. ");
 }
}
class D : B
{
 public new void Print()
 {
  Console.WriteLine("Derived Display. ");
 }
}
class InterfaceTest
{
 static void Main()
 {
  D d=new D();
  d.Print();
  Display dis = (Display)d;
  dis.Print();
  Console.ReadKey();
 }
}

Output:-