标签和发送者如何在c#中工作找不到我的代码的修复

public class Sender
{
    public delegate void MyEventHandler(object sender, EventArgs e);
    public event MyEventHandler MyEvent;

    public void DoSomething()
    {
        // 触发事件
        MyEvent?.Invoke(this, EventArgs.Empty);
    }
}

public class Receiver
{
    public void HandleEvent(object sender, EventArgs e)
    {
        // 处理事件
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        Sender sender = new Sender();
        Receiver receiver = new Receiver();

        // 订阅事件
        sender.MyEvent += receiver.HandleEvent;

        // 执行发送者的操作，触发事件
        sender.DoSomething();
    }
}