C# - Event

using System;

namespace EventTest

{

    class Program

    {

        static void Main(string[] args)

        {

            Ball b = new Ball();

            b.FlyEvent += BallFlyHandler;

           

            b.FlyEvent += delegate ()

            {

                Console.WriteLine("Catch Ball Fly Event delegate");

            };

            b.FlyEvent += () =>

            {

                Console.WriteLine("Catch Ball Fly Event 匿名函式");

            };

            b.Throw();

            Console.ReadLine();

        }

        private static void BallFlyHandler()

        {

            Console.WriteLine("Catch Ball Fly Event BallFlyHandler");

        }

    }

    class Ball

    {  

        public event Action FlyEvent = null;

        public void Throw()

        {

            if (FlyEvent != null)

                FlyEvent();

        }

    }

}