I have a text field where a user is to enter an email address. I have the Text Box do a Postback that then turns the input into uppercase. I also have a regular expression validator that checks to make sure it is an email.
If I disable the postback on the text box the validator works and displays an error on bad email address. But once the postback is enabled the error appears for a brief second before the postback kicks in and turns everything to uppercase and then clears the error message.
What should I do?