事件模拟场景经典例子

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

namespace NET.MST.Sixth.CatCry
{
 class MainClass
 {
 static void Main(string[] args)
 {
 //开始模拟场景
 Console.WriteLine("开始模拟");
 Cat cat = new Cat("汤姆猫");
 Mouse mouse1 = new Mouse("米老鼠", cat);
 Mouse mouse2 = new Mouse("杰瑞鼠", cat);
 Master master = new Master("朱毅", cat);
 cat.CatCry();
 Console.Read();
 }
 }

 #region cat 
 /// <summary>
 /// 猫类型
 /// 维护猫叫事件
 /// </summary>
 public class Cat
 {
 /// <summary>
 /// 猫名
 /// </summary>
 private String _name;
 /// <summary>
 /// 猫叫的事件
 /// </summary>
 public event EventHandler<CatCryEventArgs> CatCryEvent;
 /// <summary>
 /// 构造方法
 /// </summary>
 /// <param name="name"></param>
 public Cat(String name)
 {
 _name = name;
 }
 /// <summary>
 /// 触发猫叫事件
 /// </summary>
 public void CatCry()
 {
 CatCryEventArgs args = new CatCryEventArgs(_name);
 Console.WriteLine(args);
 CatCryEvent(this, args);
 } 
 }
 /// <summary>
 /// 猫叫事件的参数
 /// </summary>
 public class CatCryEventArgs : EventArgs
 {
 //发出叫声的猫的名字
 private String _catname;
 public CatCryEventArgs(String catname):base()
 {
 _catname = catname;
 }
 /// <summary>
 /// 输出参数内容
 /// </summary>
 /// <returns></returns>
 public override string ToString()
 {
 return _catname + "叫了";
 }
 }
 #endregion

 #region Master
 /// <summary>
 /// 主人类型
 /// </summary>
 public class Master
 {
 /// <summary>
 /// 主人名字
 /// </summary>
 private String _name;
 /// <summary>
 /// 构造方法，订阅事件
 /// </summary>
 /// <param name="name"></param>
 /// <param name="cat"></param>
 public Master(String name, Cat cat)
 {
 _name = name;
 cat.CatCryEvent += CatCryHandler;
 }
 /// <summary>
 /// 猫叫事件处理方法
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="args"></param>
 private void CatCryHandler(object sender, CatCryEventArgs args)
 {
 WakeUp();
 }
 /// <summary>
 /// 惊醒方法
 /// </summary>
 private void WakeUp()
 {
 Console.WriteLine(_name + "醒了");
 }
 }
 #endregion

 #region mouse
 /// <summary>
 /// 老鼠类型
 /// </summary>
 public class Mouse
 {
 /// <summary>
 /// 老鼠名字
 /// </summary>
 private String _name;

 public Mouse(String name, Cat cat)
 {
 _name = name;
 cat.CatCryEvent += CatCryHandler;
 }
 /// <summary>
 /// 猫叫事件处理方法
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="args"></param>
 private void CatCryHandler(object sender, CatCryEventArgs args)
 {
 Run();
 }
 /// <summary>
 /// 逃跑方法
 /// </summary>
 private void Run()
 {
 Console.WriteLine(_name + "逃走了");
 }
 }
 #endregion
}