Event using generic EventHandler<> not visible in Designer

Question

I\'ve just noticed that if I add an event using a generic eventhandler to my UserControl, the event is not visible in the designer when I add the user control to a form.

Answer 1

The Windows Forms designer has limited support for generic types. It will work okay when you avoid the generic type argument for EventHandler<T>:

    public class TEventArgs<T> : EventArgs { }
    public class MyEventArgs : TEventArgs<int> { }
    public event EventHandler<MyEventArgs> EventNowAlsoVisibleInDesigner;