// http://stackoverflow.com/questions/5933045/what-if-i-dont-heed-the-warning-hides-inherited-member-to-make-the-current-me

​

using System;

public class Program

{

    public static void Main()

    {

        B b1 = new B();

        b1.F(); // will call B.F()

​

        A b2 = new B();

        b2.F(); // will call A.F()

        ((A)b1).F(); // will call A.F()

        C c1 = new C();

        c1.F(); // will call C.F()

        A c2 = new C();

        c2.F(); // will call A.F()

        ((A)c1).F(); // will call A.F()

        D d1 = new D();

        d1.F(); // will call D.F()

        A d2 = new D();

        d2.F(); // will call D.F()

        ((A)d1).F(); // will call D.F()

    }

    class A

    {

        public virtual void F()

        {

            Console.WriteLine("A.F()");

        }

    }

    class B : A

    {

        public void F()

        {

            Console.WriteLine("B.F()");

        }

    }

    class C : A

    {

        public new void F()

        {

            Console.WriteLine("C.F()");

        }

    }

    class D : A

    {

        public override void F()

        {

            Console.WriteLine("D.F()");

        }

    }

}