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

namespace ConsoleApplication2
{
    class Program
    {
        public delegate void ButtonEventHandler();

        class TestButton
        {
            public event ButtonEventHandler OnClick;

            public void TestHandler()
            {
                System.Console.WriteLine("TestHandler事件被注册");
            }

            public void Click()
            {
                OnClick();
            }
        }
        static void Main(string[] args)
        {
            TestButton mb = new TestButton();
            mb.OnClick += new ButtonEventHandler(mb.TestHandler);
            mb.OnClick += delegate { System.Console.WriteLine("匿名事件被注册"); };
            mb.Click();
            Console.WriteLine("移除TestHandler事件");
            mb.Click();
            Console.ReadLine();
        }
    }
}