using System;

​

class BaseClass

{

    public void Func1()

    {

       // Console.WriteLine("BaseClass - func1");

    }

}

​

class ChildClass : BaseClass

{

    public void Func1()

    {

        //Console.WriteLine("ChildClass - func1");

    }

}

​

class Program

{

    static void Main(string[] args)

    {

        BaseClass b = new ChildClass();

        b.Func1();

    }

}