.NET框架提供有专门的委托类EventHandler,原型如下:
选项:
A:public delegate void EventHandler(object sender, EventArgs e);;
B:public delegate void EventHandler(EventArgs e, object sender);;
C:public event void EventDelegate(object sender, EventArgs e);;
D:public event void EventDelegate(EventArgs e, object sender);
发布时间:2024-05-10 13:34:35