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
}