Delegate is type which holds the method(s) reference in an object.
it is also reffered as a type safe function pointers.

using System;
using System.Collections.Generic;
using System.Text;

namespace delegates
{
    public delegate void TestDelegate(string message); //Declare the delegate
    class Test
    {
        public static void Display(string message)
        {
            Console.WriteLine("The string entered is : " + message);
        }
        static void Main()
        {
            TestDelegate t = new TestDelegate(Display); //Instantiate the delegate
            Console.WriteLine("Please enter a string");
            string message = Console.ReadLine();
            t(message); //Invoke the delegate
            Console.ReadLine();
        }
    }
}