CompletionSession, Committing and dialogs

Hi Kasper,

The problem here is that when you show the MessageBox, it's taking focus away from the completion list and by default, focus loss will close the list.  Thus your session closes when the MessageBox is opened.  You might be able to override the ClosesOnLostFocus property to have it return false if you inherit CompletionSession in a custom class.

I was under the impression that your demo was trying to show exactly the same thing that I want: The ability to select the inserted value from a custom dialog instead of directly from the list - is that not the case? If it is, then I do find it a bit odd that I have to do a custom CompletionSession implementation that, as you put it, might work, to accomplish it?

Besides, that seems like a complicated solution, compared to just manually inserting the text which is what I ended up doing for now :)

Well really here the completion session is already closing due to the commit of the dialog opening item.  So it does make more sense anyhow for you to manually insert the text as you already are in that scenario.  Even if you did happen to inject a modal dialog right there as I said with the ClosesOnLostFocus change (which can be done in a few lines of code), you'd have to update the selected completion item's pre- and post-text results prior to exiting of the OnSessionCommitting event.  Your text replacement is more straightforward.