C#

using System; 

namespace EventsTest 
{ 
    public delegate void FirstEventHandler(); 
    public delegate void SecondEventHandler(); 

    public class EventsClass 
    { 
        public event FirstEventHandler FirstEvent; 
        public event SecondEventHandler SecondEvent; 

        private void FireOffFirstEvent() 
        { 
            FirstEvent(); 
        } 

        private void FireOffSecondEvent() 
        { 
            SecondEvent(); 
        } 

        public void FireOffAllEvents() 
        { 
            FireOffFirstEvent(); 
            FireOffSecondEvent(); 
        } 
    } 

    public class EntryClass 
    { 
        static void Main() 
        { 
            EventsClass MyEvents = new EventsClass(); 
            string MyChoice; 

            do 
            { 
                Console.Write("Do you wish to register the event clients to the events? (y/n): "); 
                MyChoice = Console.ReadLine(); 

            } while (MyChoice != "y" && MyChoice != "n"); 

            switch (MyChoice) 
            { 
                case "y": 

                    MyEvents.FirstEvent += new FirstEventHandler(FirstEventClient); 
                    Console.WriteLine("First event registered."); 

                    MyEvents.SecondEvent += new SecondEventHandler(SecondEventClient); 
                    Console.WriteLine("Second event registered."); 

                    break; 

                case "n": 

                    Console.WriteLine("No events registered."); 

                    break; 
            } 

            Console.WriteLine("Firing off all events.."); 

            MyEvents.FireOffAllEvents(); 

            Console.WriteLine("Press enter to continue.."); 
            Console.ReadLine(); 
        } 

        static void FirstEventClient() 
        { 
            Console.WriteLine("First event processed successfully."); 
        } 

        static void SecondEventClient() 
        { 
            Console.WriteLine("Second event processed successfully."); 
        } 
    } 
}