Quote Originally Posted by boops boops View Post
The WPF listbox can't easily be activated from the Form. It can be done, and it wouldn't take thousands of lines of new code, but you do need a basic knowledge of XAML and WPF as well as the possibilities and limitations of the WindowsFormsHost and the ElementHost.
I already did it in a follow up post. Did you see the post above yours here? It works perfectly with no odd quirks as far as I could tell. Activation/Focus and all that works as you'd expect.