WPF ListBox

Question

I have created a Listbox that remains hidden until the textbox above it gains focus. The idea being to minimize screen real estate when the list box is no in use. What I need to make happen however for my particular view is to have the Listbox (when it becomes visible) span across a grid that is positioned below it. Is this possible to do? How? Combo boxes will display across other grids when they are opened. That is pretty much what I need to achieve with a Listbox.....

Tom · Answer

That's it! Thank you thank you thank you.

Tom · Answer

Dude that is perfect! Thank you!

Bechir Bejaoui · Answer

Ah yes I see is this what you want to realize?

Leung Yat Chun · Answer

I guess this is what you wanted I just posted an article for similar subject as well you may want to take a look .

Bechir Bejaoui · Answer

Not at all you're welcome an good luck if you find any problem then post me back

Tom · Answer

This is a very nice implementation. Well done! It doesn't however solve the issue that I'm facing. I need the TextBox when it's open to span across another Grid. I think that the answer may be to put the listbox inside a Popup. I'm going to give that a try. Thank you very much for responding.

Bechir Bejaoui · Answer

You mean like this copy and paste this code in your XAML editor x:Name=txtBox Grid.Column=0 Width=150 Height=30 FocusableChanged=TextBox_FocusableChanged LostFocus=txtBox_LostFocus MouseEnter=txtBox_MouseEnter> Grid.Row=1 Width=150 Height=120 /> Button copy and paste this code into your C# code private void Window_Loaded(object sender RoutedEventArgs e) { if (txtBox.Focus()) { this.Height = 150; } } private void txtBox_LostFocus(object sender RoutedEventArgs e) { this.Height = 324; } private void txtBox_MouseEnter(object sender MouseEventArgs e) { if (txtBox.Focus()) { this.Height = 150; } }