事件的原型是委托

namespace ConsoleClass1
{
    
    
    class Test
    {
    private static void CodeToRun(object sender, System.EventArgs e)
    {
        System.Console.WriteLine("CodeToRun is executing");
    }

    private static void MoreCodeToRun(object sender, System.EventArgs e)
    {
        System.Console.WriteLine("MoreCodeToRun is executing");
    }
       
    static void Main()
    {
        EventClass ec = new EventClass();

        ec.CustomEvent += new EventClass.CustomEventHandler(CodeToRun);
        ec.CustomEvent += new EventClass.CustomEventHandler(MoreCodeToRun);

        System.Console.WriteLine("First Invocation:");
        ec.InvokeEvent();

        ec.CustomEvent -= new EventClass.CustomEventHandler(MoreCodeToRun);

        System.Console.WriteLine("/nSecond Invocation:");
        ec.InvokeEvent();

        System.Console.ReadLine();

    }

    }
    public class EventClass
{
    // Declare the delegate type:
    public delegate void CustomEventHandler(object sender, System.EventArgs e);

    // Declare the event variable using the delegate type:
    public event CustomEventHandler CustomEvent;
       

    public void InvokeEvent()
    {
        // Invoke the event from within the class that declared the event:
        CustomEvent(this, System.EventArgs.Empty);
    }
}
}
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值