I have an asp.net textbox and a MaskedEditExtender control attached to it. The textbox is used for date input. The MaskedEditExtender has MaskType="Date" Mask="99/99/9999".
When the form is submitted with an invalid date, the browser shows a Javascript error "… string was not recognized as a valid datetime".
I know why the error shows up. Is there a way to use the extender to just control what the user enters and not validate or convert the input?
Best Answer
on the text box you and set up a keypress function.
Validate if the key pressed is a number String.fromCharCode(event.which) or event.keycode (ie or FF)
Then can check that the text box is contains valid code and format.
If invalid you can set to a default that is valid or just prevent the keypress by using preventDefault()
if invalid format can disable the submit button also ....
Good luck