using System;

public class Program

{

       public  static void Main(string[] args)

        {

            BaseClass bc = new BaseClass();

            DerivedClass dc = new DerivedClass();

            BaseClass bcdc = new DerivedClass();

​

            bc.Method1();

            bc.Method2();

            dc.Method1();

            dc.Method2();

       bcdc.Method1();

            bcdc.Method2();

            // Output:

            // Derived - Method1

            // Base - Method2

        }

    }

​

    class BaseClass

    {

        public virtual void Method1()

        {

            Console.WriteLine("Base - Method1");

        }

​

        public virtual void Method2()

        {

            Console.WriteLine("Base - Method2");

        }

    }

​

    class DerivedClass : BaseClass

    {

        public override void Method1()

        {

            Console.WriteLine("Derived - Method1");

        }

​

        public new void Method2()

        {

            Console.WriteLine("Derived - Method2");

        }

    }

​

​