'Show If' validation if incorrect password/username
I have searched the forums but cannot find a way to do the following.
1. On my login page I have my user name and password fields. If a user accidentally enters a wrong username or password I would like an error message to show after the log in button is pressed.
I know how to do this, I just do not know what to validate against. I have to somehow tell validation toolkit to find a match of the username and the password in the database. Secondly I dont know how this will work because the password in the database if encrypted.
If anyone could explain how i would achieve this I would be very grateful.