自定义事件

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

namespace 事件
{
    public class ctrEvent
    {
        public delegate void SomeHandler(object sender,System.EventArgs e);// declare  a  delegate
        public event SomeHandler someEvent;//declare a delegate event
        public ctrEvent()
        { 
             //bind event
            this.someEvent += new SomeHandler(ctrEvent_someEvent);
        }

        void ctrEvent_someEvent(object sender, EventArgs e)
        {
            //throw new NotImplementedException();
            Console.WriteLine("雪夜尘封:"+e.ToString());
        }
        public void RaiseSomeEvent()
        {
            EventArgs e = new EventArgs();
            
            Console.WriteLine("please input 'xue'");
            string str = Console.ReadLine();
           
            if (str.ToLower()=="xue")
            {
                //在用户输入一个xue的时候出发事件
                someEvent(this,e);
            }
            else
            {
                Console.WriteLine("input is error");
            }
        }
    }
    class Program
    {
        private ctrEvent myCtrEvent = new ctrEvent();//初始化对象
        public  Program()
        {
            myCtrEvent.someEvent += new ctrEvent.SomeHandler(myCtrEvent_someEvent);
            myCtrEvent.RaiseSomeEvent();//输入正确口令  就会触发事件
        }

        void myCtrEvent_someEvent(object sender, EventArgs e)
        {
            //throw new NotImplementedException();
            Console.WriteLine("事件响应，也就是事件发生");

        }
        static void Main(string[] args)
        {
            Program pr = new Program();
            Console.ReadLine();
        }
    }
}