I was looking if it's possible to re-use the Sharepoint validation control used to check the URL name for special characters. I like to use this error validation in my custom application page to create new sites.
I'm looking for the ValidationExpression in fact...
Thanks in advance!
PS. Karine Bosh has written some nice post about validation controls: http://karinebosch.wordpress.com/sharepoint-controls/sharepoint-validation-controls/