Displaying error message on typing a invalid character

[saravanan k]

Hi,

      I have a requirement like, I should accept any string which does not contain some special characters like @,*,& etc. Actually i should block the user from typing these character.
Similar behavior as the unit price text box in this example
http://demos.telerik.com/aspnet-ajax/grid/examples/dataediting/alleditablecolumns/defaultcs.aspx.

At the same time i should display some error message to the user about the blocking action. I am bit confused of acheiving this through radinputmanager and a asp text area control.

I tried setting the telerik:RegExpTextBoxSetting tag with the right regular expression, validation message and the control id, but the validation happens only on click of any button.
This is the link i used as reference http://www.telerik.com/help/aspnet-ajax/using_radinputmanager.html

Kindly help me with some code snippets.

Regards,
Saravanan K

[Shinu]

Hello Saravanan,


One suggestion would be attaching the TextBoxSetting-ClientEvents-OnKeyPress event and check for the key pressed. You can also alert if the user typed invalid key.

Check out the documentation to know more about the event:
OnKeyPress


Feel free to share the comments,
Shinu.