.NET 中的事件签名——使用强类型“发送者” [关闭]

csharp
public class MyEventArgs : EventArgs
{
    public string Message { get; set; }
}
public class MySender
{
    public event EventHandler<MyEventArgs> MyEvent;
    public void DoSomething()
    {
        // 触发事件
        OnMyEvent(new MyEventArgs { Message = "Event triggered" });
    }
    protected virtual void OnMyEvent(MyEventArgs e)
    {
        MyEvent?.Invoke(this, e);
    }
}
public class MyListener
{
    public MyListener(MySender sender)
    {
        sender.MyEvent += MyEventHandler;
    }
    private void MyEventHandler(object sender, MyEventArgs e)
    {
        // 处理事件
        Console.WriteLine($"Received message: {e.Message}");
        var mySender = (MySender)sender;
        mySender.DoSomething();
    }
}
public class Program
{
    public static void MAIn(string[] args)
    {
        var sender = new MySender();
        var listener = new MyListener(sender);
        sender.DoSomething();
    }
}