Add a listener for all item events in WPF

Question

I would like to hook all available element events in a single call. Something like that:

elem.AddHandler(AnyRoutedEvent, (RoutedEventHandler)handler)

How can i do this?

Answer 1

Try this to get all events from the Button type ... You can replace another type.

RoutedEvent[] events = EventManager.GetRoutedEventsForOwner(typeof(Button));

foreach (RoutedEvent e in events)
   elem.AddHandler(e, handler);

You can also substitute the following to get ALL routable events for ALL types, but this will be a pretty list!

RoutedEvent[] events = EventManager.GetRoutedEvents();

Answer 2

You can use the RegisterClassHandler EventManager method to statically listen to all elements at once :)

EventManager.RegisterClassHandler(typeof(your class), Button.ClickEvent, new RoutedEventHandler(OnButtonClick));

static void OnButtonClick(object sender, RoutedEventArgs e)
{
    //Do awesome stuff with the button click
}

Answer 3

I created this by inspiration: http://geekswithblogs.net/tkokke/archive/2009/07/17/monitoring-routed-events-in-wpf.aspx

    /// <summary>
    /// This is used for debugging, when your looking for a specific event
    /// </summary>
    public static void RegisterAllEvents(Type type, FrameworkElement target)
    {
        var events = EventManager.GetRoutedEvents();
        foreach (var routedEvent in events)
        {
            EventManager.RegisterClassHandler(type,
                                routedEvent, new RoutedEventHandler((sender, args) =>
                {
                    if ( sender != target)
                        return;
                    System.Diagnostics.Debug.WriteLine(args.OriginalSource + "=>" + args.RoutedEvent);
                }));
        }
    }