WPF Double Click Events

First some background. I am trying to make a list of CheckBox Objects that when Single-Clicked will add their name to a list and when Double-Clicked will remove all others from the list and then add itself.

In the good old days (WinForms, Win32) when a Double-Click event was passed you would normally see a Single-Click event fire just before the Double-Click. This system worked out fine because logically you expect the Single-Click since it happened first and then you could override the Single-Click with whatever you wanted to have happen in the Double-Click Event.

So imagine my surprise in WPF when I made a CheckBox and subscribed to both the SingleClickEvent and the MouseDoubleClick and when the Double-Click fired I received a Double-Click followed by the Single-Click. Now this throws me off, but in this case I can make my Single-Click method which follows my Double-Click method do what I need it to do, however, when I go do unit tests I find that I have to write a test like this:

DoubleClickEvent.Raise(this, new EventArgs());
SingleClickEvent.Raise(this, new EventArgs());

I don’t like this as a test because it does not logically follow what you would expect from a Double-Click Event.

With the background out of the way let us explore some possible solutions.

So in WPF I decided to work with the MouseLeftButtonUpEvent and the MouseLeftButtonDownEvent. This was a mistake as I never saw the events fire. This, I think, was because of the hierarchy of the CheckBox eats these events in order to have its own click event. Lucky for me there is a PreviewMouseLeftButtonUpEvent and a PreviewMouseLeftButtonDownEvent. These events are fired and I can then use the MouseEventArgs.ClickCount to know if I have a single or double click event. But even this isn’t working correctly. I believe that a MouseUp event is much more accurate than a MouseDown event because if a user was to click then realize It was a mistake they would usually drag the mouse off of the object and let go and the click event wouldn’t not fire. Now if I was using the MouseUp event the ClickCount would never grow in count to register a double click. Therefore I am stuck with using the MouseDownEvent to get the behavior I wish from ClickCount. This I don’t want to do because it doesn’t give me the correct behavior out of user side which is stated above.

I think the final option is to derive a control from CheckBox and write my own event handling to force behavior as I expect it. Again I don’t want to do this because it seems like adding some complexity to the system to counter a problem that should not be a problem in the first place.

In conclusion I have no real answer for this issue that is not a hack or adding too much complexity to the system for how simple the issue really is I guess I could do a timer and try to do all the events myself but again it is much to complex.

Has anyone else had this sort of problem with a single click following a double click or am I going crazy?

Example projects both WinForms and WPF