委托与事件

委托与事件

C# 面向对象 控制台程序

代码：

using System;

class jiaoweit
{
static void Main(string[] args)
{
Cat1 cat1 = new Cat1(“Tom”);
Mouse mouse1 = new Mouse(“Jerry”);
Mouse mouse2 = new Mouse(“Jack”);
cat1.CatShout += new Cat1.Cat1ShoutEventHandler(mouse1.Run);
cat1.CatShout += new Cat1.Cat1ShoutEventHandler(mouse2.Run);
cat1.Shout();
Console.Read();
}
}
public class Cat1ShoutEventArgs:EventArgs
{
private string name;
public string Name
{
get { return name; }
set { name = value; }
}
}

class Cat1
{
    private string name;
    public Cat1 (string name)
    {
        this.name = name;
    }
    public delegate void Cat1ShoutEventHandler(object sender,Cat1ShoutEventArgs args);
    public event Cat1ShoutEventHandler CatShout;
    public void Shout()
    {
        Console.WriteLine("喵，我是{0}.", name);
        if(CatShout!= null)
        {
            Cat1ShoutEventArgs e = new Cat1ShoutEventArgs();
            e.Name = this.name;
            CatShout(this,e);
        }
    }
}

class Mouse
{
    private string name;
    public Mouse (string name)
    {
        this.name = name;
    }
    public void Run(object sender, Cat1ShoutEventArgs args)
    {
        Console.WriteLine("老猫来了，{0}快跑！", name);
    }
}