C#教程之简单事件

两个类之间交互

using System;

namespace Event
{
class Program
{
static void Main(string[] args)
{
var a = new A();
Program p = new Program();
a.Events += p.Message;
a.ZiDuanA();
Console.ReadLine();
}

private void A_Events(string a)
{
Console.WriteLine(a);
}

public void Message(string a)
{
Console.WriteLine("事件"+a);
}
}

class A
{
public delegate void Event(string a);
public event Event Events;
public void ZiDuanA()
{
Events("输入A");
}
}
}