using System;

using System.Threading;

public class Program

{

    public static void Main()

    {

        MyClass obj=new MyClass();

        obj.MyMethod(DisplayRunningCount);

    }

​

    public static void DisplayRunningCount(int i)

    {

        Console.WriteLine(i.ToString());

    }

​

}

​

public class MyClass

{

    public delegate void Callback(int i);

    public void MyMethod(Callback obj)

    {

        for(int i=0;i<10;i++)

        {

            Thread.Sleep(200);

            obj(i);

        }

    }

}