Any email validation functions?

[VB Programmer]

Does anyone have any VB.NET functions which validate an email address?
Could you post it? I would like it to do as much as the regular expression
validator if possible.

Thanks in advance!

 

[Brian Henry]

there should already be a email validator regex function in the validators
to test for this (at least there is in asp.net) but here you go...

\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

regex function to validate all email addresses

 

[VB Programmer]

Thanks, but I'm looking for a VB.NET version. Do you know of one?

there should already be a email validator regex function in the validators
to test for this (at least there is in asp.net) but here you go...

\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

regex function to validate all email addresses

Does anyone have any VB.NET functions which validate an email address?
Could you post it? I would like it to do as much as the regular
expression
validator if possible.

Thanks in advance!

 

[VB Programmer]

Oh... I got it! Here's one I'd like to share. If anyone has any better one
please let me know.

Private Function EmailIsValid(ByVal strEmailAddress As String) As
Boolean
Return Regex.IsMatch(strEmailAddress,
"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9
\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

Thanks!

Thanks, but I'm looking for a VB.NET version. Do you know of one?

there should already be a email validator regex function in the validators
to test for this (at least there is in asp.net) but here you go...

\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*

regex function to validate all email addresses

Does anyone have any VB.NET functions which validate an email address?
Could you post it? I would like it to do as much as the regular
expression
validator if possible.

Thanks in advance!

 

[Jos]

Oh... I got it! Here's one I'd like to share. If anyone has any
better one please let me know.

Private Function EmailIsValid(ByVal strEmailAddress As String) As
Boolean
Return Regex.IsMatch(strEmailAddress,
"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9
\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

Unfortunately, this code will refuse mails from the "museum" domain.

Replace the {2,4} with {2,6} to allow for this domain as well.

 

[VB Programmer]

Thanks! Great catch!

Oh... I got it! Here's one I'd like to share. If anyone has any
better one please let me know.

Private Function EmailIsValid(ByVal strEmailAddress As String) As
Boolean
Return Regex.IsMatch(strEmailAddress,

"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9

\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

Unfortunately, this code will refuse mails from the "museum" domain.

Replace the {2,4} with {2,6} to allow for this domain as well.

 

[Jay B. Harlow [MVP - Outlook]]

In addition to the other comments:

MSDN has a handful of common Regular Expressions
patterns.

Here is the e-mail example:
http://msdn.microsoft.com/library/d...ml/cpconexampleconfirmingvalidemailformat.asp

The same section has a number of other examples.


I also find these pages to be useful when dealing with Regular Expressions:
http://www.regular-expressions.info/

http://msdn.microsoft.com/library/d...l/cpconRegularExpressionsLanguageElements.asp

Hope this helps
Jay

 

[Vince]

I don't get anything of what is happening in the function!!! How does this
validate Email addresses and why not the museum domain??
Confused & (probably) stupid.

Thanks! Great catch!

"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9

\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

Unfortunately, this code will refuse mails from the "museum" domain.

Replace the {2,4} with {2,6} to allow for this domain as well.

 

[Vince]

Never mind, just saw Jay's post.

I don't get anything of what is happening in the function!!! How does this
validate Email addresses and why not the museum domain??
Confused & (probably) stupid.

Thanks! Great catch!

"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9

\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

Unfortunately, this code will refuse mails from the "museum" domain.

Replace the {2,4} with {2,6} to allow for this domain as well.