using System;

​

class A {

   public int Foo(){ return 5;}

   public virtual int Bar(){return 5;}

}

class B : A{

   public new int Foo() { return 1;}     //shadow

   public override int Bar() {return 1;} //override

}

​

public class Program

{

    public static void Main()

    {

        A clA = new A();

        B clB = new B();

​

        Console.WriteLine(clA.Foo()); // output 5

        Console.WriteLine(clA.Bar()); // output 5

        Console.WriteLine(clB.Foo()); // output 1

        Console.WriteLine(clB.Bar()); // output 1

​

        //now let's cast B to an A class

        Console.WriteLine(((A)clB).Foo()); // output 5 <<<-- shadow

        Console.WriteLine(((A)clB).Bar()); // output 1 

    }

}