Click here to Skip to main content
11,701,948 members (64,561 online)
Rate this: bad
good
Please Sign up or sign in to vote.
See more: VB.NET
please how can i validate a form to not accept any existing email before the user submit the application should display invalid email
Posted 30-Apr-11 8:57am

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

Well the check for whether an email is valid is usually done at the client level, so that's gotta come first.

The check for existing email comes at the server side, so that'd usually be a 2nd check. You could use Ajax to change this order but I don't see why you would want to do that.
  Permalink  

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Maciej Los 420
1 Sergey Alexandrovich Kryukov 355
2 OriginalGriff 314
3 Mika Wendelius 119
4 CHill60 105
0 OriginalGriff 8,344
1 Sergey Alexandrovich Kryukov 7,507
2 CPallini 4,922
3 Maciej Los 4,371
4 Mika Wendelius 3,556


Advertise | Privacy | Mobile
Web03 | 2.8.150819.1 | Last Updated 30 Apr 2011
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100