How can i filter out a comma in a TextBoxExtender in ASP.NET AJAX Toolkit?

Question

I want my TextBoxExtender to NOT allow a comma and a slash. How do I set it ? Using an escape sequence ?

Thanks.

Answer 1

I think you are looking for the InvalidChars Element. The FilteredTextBoxExtender can be set to filter either Valid or Invalid Characters.

   <ajaxToolkit:FilteredTextBoxExtender ID="MyId" runat="server"
        TargetControlID="TextBoxName"         
        FilterType="Custom"
        FilterMode="InvalidChars"
        InvalidChars="Your Charcters" />

Reference

EDIT no you can just add all your characters you want to exclude

InvalidChars="`~!@#$%^&*()_-+=[]{}:;',.<>/? "