TextBox

Question

I have a textbox that I want only mumbers from, not alpha numerics. I remeber on winForms there was a way to set textboxes so the user was only able ot enter 0 - 9. But I can't seem to find it with WPF.

How would I go about making sure only numbers can be entered?

Answer 1

WinForms has a MaskedTextBox control that allows you to do this conveniently. Unfortunately this feature is not yet available in WPF. What you can do instead is to handle the TextChanged event on your WPF TextBox, and filter TextBox.Text to only contain numbers.

Answer 2

Here are 3 ways of doing it...
http://forums.msdn.microsoft.com/en-US/wpf/thread/fb0745f0-6c26-4a9e-b792-3f7e8484b243
http://dedjo.blogspot.com/2007/11/number-only-textbox.html

You can also find a great example here:
http://dotnetus.spaces.live.com/Blog/cns!4E39ECD492E4EEC1!550.entry 
http://sharpinsights.wordpress.com/2007/09/28/numeric-value-editor-control-similar-to-ms-expression-blend/

Hope this helps. If you still can't get it to work just let me know. :)

Answer 3

Or you could use MaskedTextBox in Winform and then host it in WPF.