Question

C#程序出问题了

using System;

namespace eventanddelegat
{
class Event
{
public delegate void Handle(object x);
public event Handle Click;

private int money;

public Event(int money)
{
this.money = money;
}

public int MONEY
{
get
{
return money;
}
set
{
money = value;
}
}

public void Trigger()
{
Console.WriteLine("HELLO,My Event");

if (money >= 0)
{
Click(this);
}
}
}

class Delegate
{
public void DelegateHandle(Event temp)
{
Console.WriteLine("HELLO,My Delegate");

temp.MONEY = temp.MONEY - 100;

Console.WriteLine("剩余{0}元", temp.MONEY);
}
}

class Program
{
static void Main(string[] args)
{
Event MyEvent = new Event(10000);
Delegate MyDelegate = new Delegate();

MyEvent.Click +=new Event.Handle(MyDelegate.DelegateHandle);

MyEvent.Trigger();

Console.ReadKey();
}
}
}
编译时说这句：“MyEvent.Click +=new Event.Handle(MyDelegate.DelegateHandle);
”中的DelegateHandle的重载均与委托eventanddelegate.Event.Handle不匹配

Answer 1

public void DelegateHandle(object t)
{
Event temp = t as Event;

Console.WriteLine("HELLO,My Delegate");

temp.MONEY = temp.MONEY - 100;

Console.WriteLine("剩余{0}元", temp.MONEY);
}

把中间Delegate类得方法参数改一下，因为您在 public delegate void Handle(object x);
中定义的Handle的委托类型的形参是object类型，参数要与委托类型严格一致，你可以到事件处理的函数里再把这个参数转化为你要用的Event类型，当然，最好加一个类型验证。
特意给你把代码复制到vs里，这个地方改了就肯定能运行了。

Answer 2

两处委托的签名都不一样呢