WPF ListBox

Tom

17y11.8k

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.....

7 Replies

Know the answer? Post it — somebody with the same question will find it here.

Tom17y ago
That's it! Thank you, thank you, thank you.
Tom17y ago
Dude, that is perfect! Thank you!
Bechir Bejaoui17y ago
Ah yes I see, is this what you want to realize?
Leung Yat Chun17y ago







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 Bejaoui17y ago
Not at all, you're welcome an good luck, if you find any problem then post me back
Tom17y ago
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 Bejaoui17y ago
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"
                 />


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;

            }
        }