?
Solved

how to validate email id without using regular expression

Posted on 2008-06-26
6
Medium Priority
?
1,193 Views
Last Modified: 2013-12-16
how to validate email id without using regular expressions.
USING:- MICROSOFT VISUAL STUDIO2005
0
Comment
Question by:pooja
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
6 Comments
 
LVL 70

Accepted Solution

by:
Éric Moreau earned 336 total points
ID: 21873722
Can I ask you why you don't want to use a regular expressions?

You can always use those rules:
-requires a @ character
-the @ character cannot be the first one
-a . is required after the @
-at least 1 character is required between the @ and the .
-at least 1 character is required after the .
0
 
LVL 53

Assisted Solution

by:Dhaest
Dhaest earned 332 total points
ID: 21873724
Why aren't you using regular expressoins for it ?
Imports System.Text.RegularExpressions     
Function EmailAddressCheck(ByVal emailAddress As String) As Boolean
Dim pattern As String = "^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$"        
Dim emailAddressMatch As Match = Regex.Match(emailAddress, pattern)        
If emailAddressMatch.Success Then
            EmailAddressCheck = True
Else            
            EmailAddressCheck = False        
End If     
End Function

Open in new window

0
 
LVL 7

Assisted Solution

by:joesthebighmoe
joesthebighmoe earned 332 total points
ID: 21874998
You can rely on the .Net framework....



public bool IsEmailValid(string iEmail)
{
  bool oIsEmailValid = true; //until proven false
    try
    {
      MailMessage Msg = new MailMessage();
      Msg.To.Add(iEmail);
    }
    catch
    {
      //Email addresses cannot be added if the mail message thinks they are invalid
      oIsEmailValid = false;
    }
    
    return oIsEmailValid;
}

Open in new window

0
 
LVL 7

Expert Comment

by:joesthebighmoe
ID: 22204048
Usually I would not bother with this since so much opinion is involved, however your recommendation seems strange.
The user asked how to validate email without regular expressions.
emoreau & Dhaest both asked why you would not want to use regular expressions.
I actually answered his question.
That said, do what you will.
-Cheers,
Joe
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Today I had a very interesting conundrum that had to get solved quickly. Needless to say, it wasn't resolved quickly because when we needed it we were very rushed, but as soon as the conference call was over and I took a step back I saw the correct …
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
Suggested Courses

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question