How to field validate in visual basic

Question

Say i'm creating an email list. How would I validate the field to not accept text without the '@' sign?

http://stackoverflow.com/questions/1710505/asp-net-email-validator-regex/1710535#1710535 — cHao, Apr 10 '11 at 09:39

score 0 · Accepted Answer · answered Apr 10 '11 at 09:38

0

You can check indexOf() method. It will return an integer.

If email.indexOf("@") < 3 Then
MessageBox("Invalid email")
End If

I think this syntax is correct. Not sure ;)

answered Apr 10 '11 at 09:38

Anuraj

`IndexOf` returns the zero-based position of the string that is found, or -1 if it is not. What is this code supposed to do? – Cody Gray - on strike Apr 10 '11 at 10:03
I added 3 because he want to validate Email address. – Anuraj Apr 10 '11 at 10:04
But the name portion of an email address can be as short as one character. My email address could be `[email protected]`. That would fail your test here. – Cody Gray - on strike Apr 10 '11 at 10:06
Hmm thats true. But I thought min 3 characters required before @ symbol. – Anuraj Apr 10 '11 at 10:19
Sorry about the insufficient amount of description. I'm a newbie at vb, and I was making an address book in which if the email did not contain "@", a message box would appear saying "Invalid Email". I found out that I needed the Contains or IndexOf Strings. – Hassassin Apr 11 '11 at 20:02

1 Answers1