- using System;
- namespace Vczx.ProCSharp.Event
- {
- /// <summary>
- /// 类EatEventArgs 必须继承自类EventArgs,用来引发事件时封装数据
- /// </summary>
- public class EatEventArgs : EventArgs
- {
- public String restrauntName; //饭店名称
- public decimal moneyOut; //准备消费金额
- }
- /// <summary>
- /// 这个委托用来说明处理吃饭事件的方法的方法头(模式)
- /// </summary>
- public delegate void EatEventHandler(object sender, EatEventArgs e);
- /// <summary>
- /// 引发吃饭事件(EateEvent)的类Master(主人),这个类必须
- /// 1.声明一个名为EatEvent的事件: public event EatEventHandler EatEvent;
- /// 2.通过一个名为OnEatEvent的方法来引发吃饭事件,给那些处理此事件的方法传数据;
- /// 3.说明在某种情形下引发事件呢?在饿的时候。用方法Hungrg来模拟。
- /// </summary>
- public class Master
- {
- //声明事件
- public event EatEventHandler EatEvent;
- //引发事件的方法
- public void OnEatEvent(EatEventArgs e)
- {
- if (EatEvent != null)
- {
- EatEvent(this, e);
- }
- }
- //当主人饿的时候,他会指定吃饭地点和消费金额。
- public void Hungry(String restrauntName, decimal moneyOut)
- {
- EatEventArgs e = new EatEventArgs();
- e.restrauntName = restrauntName;
- e.moneyOut = moneyOut;
- Console.WriteLine("主人说:");
- Console.WriteLine("我饿了,要去{0}吃饭,消费{1}元", e.restrauntName, e.moneyOut);
- //引发事件
- OnEatEvent(e);
- }
- }
- /// <summary>
- /// 类Servant(仆人)有一个方法ArrangeFood(安排食物)来处理主人的吃饭事件
- /// </summary>
- public class Servant
- {
- public void ArrangeFood(object sender, EatEventArgs e)
- {
- Console.WriteLine();
- Console.WriteLine("仆人说:");
- Console.WriteLine("我的主人, 您的命令是 : ");
- Console.WriteLine("吃饭地点 -- {0}", e.restrauntName);
- Console.WriteLine("准备消费 -- {0}元 ", e.moneyOut);
- Console.WriteLine("好的,正给您安排。。。。。。。。n");
- System.Threading.Thread.Sleep(5000);
- Console.WriteLine("主人,您的食物在这儿,请慢用");
- Console.Read();
- }
- }
- /// <summary>
- /// 类God安排qinshihuang(秦始皇)的仆人是lisi(李斯),并让李斯的ArrangeFood
- /// 方法来处理qinshihuang的吃饭事件:qinshihuang.EatEvent += new EatEventHandler(lishi.ArrangeFood);
- /// </summary>
- public class God
- {
- public static void Start()
- {
- Master qinshihuang = new Master();
- Servant lishi = new Servant();
- qinshihuang.EatEvent += new EatEventHandler(lishi.ArrangeFood);
- //秦始皇饿了,想去希尔顿大酒店,消费5000元
- qinshihuang.Hungry("希尔顿大酒店", 5000.0m);
- }
- }
- }
- //该片段来自于http://www.codesnippet.cn/detail/240720134773.html
来源: http://www.codesnippet.cn/detail/240720134773.html