Net中事件的高级用法之三

1.事件的高级应用

使用事件可以解除代码耦合

2.事件高级应用实例

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

namespace MyEvent
{
    public delegate void MiaoEventDelegate();
    public class Cat
    {
        public event MiaoEventDelegate MiaoEventHandler;
        public void Miao()
        {
            Console.WriteLine("猫，苗一声");
            Mouse.Run();
            Dog.Wang();
            Neighbor.Awake();
            Stealer.Hide();
            Baby.Dry();
        }
        public void MiaoEvent(){
            Console.WriteLine("**************MiaoEvent*****************");
            Console.WriteLine("另外一只猫，喵一声");
            if (MiaoEventHandler !=null)
            {
                MiaoEventHandler();
            }
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    public class Baby
    {
        public static void Dry()
        {
            Console.WriteLine("小孩子哭");
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    public class Dog
    {
        public static void Wang()
        {
            Console.WriteLine("狗叫");
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    public class Mouse
    {
        public static void Run()
        {
            Console.WriteLine("老鼠跑");
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    public class Neighbor
    {
        public static void Awake()
        {
            Console.WriteLine("邻居被吵醒");
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    public class Stealer
    {
        public static void Hide(){
            Console.WriteLine("小偷藏起来");
        }
    }
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace MyEvent
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("欢迎来的流星小子博客学习");
            Cat cat = new Cat();
           // cat.Miao();
            cat.MiaoEventHandler += Mouse.Run;
            cat.MiaoEventHandler += Dog.Wang;
            cat.MiaoEventHandler += Neighbor.Awake;
            cat.MiaoEventHandler += Stealer.Hide;
            cat.MiaoEventHandler += Baby.Dry;
            cat.MiaoEvent();

            Console.Read();
        }
    }
}