Valid regular expression not working with validator control

Hi

I get a JavaScript error with this expression when using the
RegExpValidator. Also if I switch off client script the server side code
validator finds a match regardless of the entered string.

(?<!@emailaddressnotallowed\.org)$

Is there a way of writing this so it works with the validator in both client
side and server side?

Thanks
Andrew

re: Valid regular expression not working with validator control

Hello Andrew,
Look behinds are not supported in Client Side code. So you need to rewrite
this to either a full expression or to use a look ahead like this:

^regexuptothe@(?!emailaddressnotallowed\.org$)rest ofthedomainregex$

--
Jesse Houwing
jesse.houwing at sogeti.nl

re: Valid regular expression not working with validator control

Hi

thanks for the tip. I still can't get what I want to work. I'm using
Expresso to test.

Basically I want to make sure that if an input text includes a certain
domain then validation fails, e.g.

anyone@not-allowed-domain.com fails
anyone@allowed-domain.com succeeds

Please bear with me as I'm a complete novice with regular expressions.

Thanks again
Andrew


"Jesse Houwing" <jesse.houwing@newsgroup.nospamwrote in message
news:21effc90464ad8ca4c739989114d@news.microsoft.c om...

re: Valid regular expression not working with validator control

Hello Andrew,
^[^@]+@(?!not-allowed-domain.com$).*$

should do, though it doesn't check the syntax of the email address itself,
it does exclude the domain you want.

Jesse

--
Jesse Houwing
jesse.houwing at sogeti.nl