Example of Virtual Function

//Visual Studio .NET, C#

//Virtual methods

//C# Virtual Method

using System;

class CLASS1

{

   public void F() { Console.WriteLine("One"); }

   public virtual void G() { Console.WriteLine("Two"); }

}

class CLASS2: CLASS1

{

   new public void F() { Console.WriteLine("Three"); }

   public override void G() { Console.WriteLine("Four"); }

}

class Test

{

   static void Main() {

      CLASS2 b = new CLASS2();

      CLASS1 a = b;

      a.F();

      b.F();

      a.G();

      b.G();

   }

}

OUT PUT:

One

Three

Four

Four