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

namespace delegate_event
{
    public delegate void simple_event(int n);
    // Declare an event class. 
    class del_event
    {
        public event simple_event fire_event;
        // This is called to fire the event. 
        public void Onfire_event(int nn)
        {
            if (fire_event != null)
                fire_event(nn);
            int n10 = 10 * nn;
            Console.WriteLine("Passing through events : " + n10);
        }

    }
    class test
    {
        // An event call_event. 
        static void call_event(int m)
        {
            Console.WriteLine("Access an event with a value = " + m);
        }

        public static void Main()
        {
            Console.WriteLine();
            Console.Write("Enter an Integer : ");
            int t = Int32.Parse(Console.ReadLine());
            del_event evt = new del_event();
            // Add call_event() to the event list. 
            evt.fire_event += new simple_event(call_event);
            // Fire the event. 
            evt.Onfire_event(t);
            Console.ReadLine();

        }
    }

}