using System;

​

public class Program

{

    public static void Main()

    {

        Giraffe g = new Giraffe();

        Animal a = g;

        Console.WriteLine("g type={0} className={1} classNameVirtual={2}", g.GetType(), g.GetClassName(), g.GetClassNameVirtual());

        Console.WriteLine("a type={0} className={1} classNameVirtual={2}", a.GetType(), a.GetClassName(), a.GetClassNameVirtual());

    }

}

​

class Animal

{

    public string GetClassName()

    {

        return "Animal";

    }

    public virtual string GetClassNameVirtual()

    {

        return "Animal";

    }

}

​

class Giraffe : Animal

{

    public string GetClassName()

    {

        return "Giraffe";

    }

    public override string GetClassNameVirtual()

    {

        return "Giraffe";

    }

}