无法在Monotouch中正确使用通用版本的EventHandler

Question

Here is the line of code...pretty simple and well-known for everyone...

public event EventHandler<TimeSpan> TimeExtended;

in Visual Studio (on windows I mean) it works as usual but in MonoTouch I can't use TimeSpan because it is not convertible to EventArgs and I can only use the types who derives from EventArgs. How can I use that this generic event handler in mono?

Thanks

Answer 1

It works in Visual Studio because you are using .Net 4.5 where the type constraint was dropped. Just define your own class inheriting from EventArgs . If you need additional data, then include it as well.

public class TimeExtendedEventArgs : EventArgs
{
  public TimeSpan TimeExtended { get; set; }
  public Player Player { get; set; }
}

public event EventHandler<TimeExtendedEventArgs> TimeExtended;

Answer 2

我做了这个事件处理程序，我想它正在工作。

public delegate void GEventHandler<T>(object sender, T args);