Add event handler dynamically having the delegate name in a string

问题

I need to assign an eventHandler to an object, in this way:

_Element.AddHandler(UIElement.MouseLeftButtonUpEvent, 
    new RoutedEventHandler(Vars.Digit), true);

but, in fact, I only have a string that contains "Digit" or other method name in the Vars object instance.

It is possible to achieve this using reflection or other kind of trick?

Thanks.

回答1:

Yes, you can find the method with Type.GetMethod, and the event with Type.GetEvent, then add a handler with EventInfo.AddEventHandler. It may be slightly fiddly - and there'll be a lot of places to put error handling - but it shouldn't be too hard. Don't forget to specify binding flags if you want to be able to bind non-public methods/events.

来源：https://stackoverflow.com/questions/1900302/add-event-handler-dynamically-having-the-delegate-name-in-a-string