[RESOLVED] why does not custom validator work for a textbox when I don t enter any text

[tutus]

Hi,
I have a textbox and button and other stuff in updatePanel, I place a customvalidator with client and server functions.

When I enter some text in the textbox my validation checks if the text entered has a length more than 3 characters, if not validation fails and error is displayed.

Every thing works fine if I enter 1 or 2 characters meaning: I get error message, and if I put 3 characters or more the page is valid and postabck occurs.

The problem is:
If I enter no text in the textbox, no error message is displayed, actually the client and server validation functions don t even execute. Any idea why?

Please note that I don t want to use RequiredFieldValidator to work around the pb. I want to be able to use the same customValidator to display my error message if no text is entered in the textbox.

Thank you very much.

[axion_sa]

That, quite simply, is the way the custom validator works: it will only validate fields that have a value. Think of it this way:
- The required field validator ensures there is a value provided, and
- The custom field validator is used to provide a bespoke validation solution.
Why increase the complexity of the CFV by duplicating the RFV's functionality?

Why don't you want to use a required field validator?

An alternative is binding the custom field validator to a secondary textbox that is hidden via CSS (display:none), whilst still validating against the original textbox.

[tutus]

thanks axion_sa for trying to help me but customvalidator has the property: ValidateEmptyText that fixes the problem. I got the answer somewhere else, and wanted to share it with u.
Thanks again for all the explanation, I appreciate.