C#简单事件示例

最新推荐文章于 2019-10-11 13:08:25 发布

原创最新推荐文章于 2019-10-11 13:08:25 发布 · 522 阅读

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#c# #class #object #string

本文通过一个简单的C#示例介绍了如何使用事件和委托。示例中定义了一个发送者(Sender)类触发事件，接收者(Receiver)类响应这些事件。此教程适合初学者了解C#中事件和委托的基本用法。

class Test
    {
        static void Main(string[] args)
        {
            //CalculateWithEvent myCalculate = new CalculateWithEvent();
            //EventListener myListener = new EventListener(myCalculate);
            //myCalculate.Add(2, 3);
            //myCalculate.Sub(3, 2);

            Sender s = new Sender();
            Receiver r = new Receiver(s);
            s.TriggerEvent();
            Console.ReadKey();
        }
    }

    public class Sender
    {
        public delegate void EventHandler(object sender);

public event EventHandler Event;

        public void TriggerEvent()
        {
            Console.WriteLine("Trigger an event.");
            Event(this);
        }
    }

    class Receiver
    {
        public Receiver(Sender sender)
        {
            sender.Event += new Sender.EventHandler(OnEvent);
        }
        private void OnEvent(object sender)
        {
            Console.WriteLine("Receive an event");
            Console.Read();
        }
    }