embedded wpf textbox does not accept input

Question

I put a wpf textbox inside a combobox to allow the user to enter a custom setting. I can read the keypress in the keydown event, but the text in the textbox does not change. What am I missing?

<ComboBoxItem Name="GridSizeCustom">
  <StackPanel Height="30"
              Orientation="Horizontal">
    <TextBlock Text="Grid Size (8 - 200)"
           HorizontalAlignment="Left"
           VerticalAlignment="Top"
           Margin="0"
           />
    <TextBox Name="GridSizeBox"
             KeyDown="test"
             Width="50"
             />
      </StackPanel>
    </ComboBoxItem>

I step through this event handler when I press a key, but no change to the textbox text:

public void test(Object sender, KeyboardEventArgs e) {

int x = 0;

  }

Any help is appreciated. Thanks.

I tried your code and it works fine. Can you explain you issue a little bit more? — Jerry Liu
– Jerry Liu, Commented May 22, 2010 at 10:54
Hans, that is the code. The text box apparently receives the keystroke because the test function is executed. Be that as it may, the text in the textbox does not change. — pro3carp3
– pro3carp3, Commented May 22, 2010 at 21:23

Kieren Johnstone · Accepted Answer · 2010-06-25 17:36:49Z

2

The standardised way to let the user enter their own text is to have what WPF calls an 'editable' ComboBox:

http://msdn.microsoft.com/en-us/library/system.windows.controls.combobox.iseditable.aspx

<ComboBox IsEditable="True"> ...

Hope that helps, I can feel your pain trying to find a way around the focus/input system!

answered Jun 25, 2010 at 17:36

Kieren Johnstone

42.1k16 gold badges100 silver badges151 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

embedded wpf textbox does not accept input

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related