Thanks Alex. I will try with that.

Sandeep

To the best of my knowledge, there is no such way to do this in the xaml. You can also use the regex property of the ValueConstraint and/or handle the keydown/EditModeEnded events.

Alex.

Hi Alex,

The problem is solved. I was not aware that the validation works when the control loses its focus. My mistake. Sorry..

But instead of specifying the characters to be allowed, 

can i tell the chars which i have to block.

any way for this..?

Sandeep

The version of Infragistics3.Wpf.Editors.v8.2 dll is 8.2.20082.200. 

Sorry to say that we are denied access for uploading files.

Any way i will giv u the steps which i followed

1. Added a XamTextEditor to a window.

2. Selected the ValueConstraint property of the editor in design mode.

3. Added the following code to the Window_Loaded event.

            List<string> chars = new List<string>();

            chars.Add("a");

            chars.Add("b");

            chars.Add("c");

            xamTextEditor1.ValueConstraint.ValidateAsType = Infragistics.Windows.Editors.ValidateAsType.Text;

            xamTextEditor1.ValueConstraint.Enumeration = chars;

Result: The Editor allows to enter any character

Please verify whether i'm missing anything..

Sandeep

Sandeep,

What are the exact DLL versions that you are using. If it is possible, attach a sample project and describe steps to reproduce the issue.

Alex.