cannot write in textbox wpf

Question

I have a WPF project (creating dll). The text boxes that added, (or the listboxs) will only accept, COPY, PASTE, DELETE, and BACKSPACE.I do not know why the textboxs have this behavior. The system receives all of the events (KEYUP, KEYDOWN, PREVIEWKEYUP, PREVIEWKEYDOWN, but won't change the text if characters are typed.

The TEXTCHANGED event only fires for the Delete, Paste, etc.

The textbox is enable and NOT readonly.

Any help would be appreciated. thanks, talia.

Hi Talia - it's unclear from your question whether you have mysteriously acquired textboxes with this behaviour, and "cannot write in textbox wpf" is the problem, or you would like to create textboxes like this, and want some suggestions as to how. Please could you clarify? — Lunivore
I do not know why the textboxs have this behavior. i would like to write in side the textbox. — talia
Could you please give an example of how are you actually creating them. — n535
yes, just add it from the toolbox. <Textbox Higth="23" Margn="100,0,58,22" Name="textBox1" VerticalAlignment="Bottom" /> — talia

talia talia · Accepted Answer · 2010-07-27T11:30:51

adding this:

Window window1 = new Window(); 
System.Windows.Forms.Integration.ElementHost.EnableModelessKeyboardInterop(window1); 
window1.Show();

should fix the bug.

also add a reference to WindowsFormsIntegration.

thanks everyone!

cannot write in textbox wpf

3 Answers