Regular Expressions

[Mark]

Hello all,
I am looking for a regular expression for an email address. IE when a
user types in there email address I need to validate it to make sure it has
a @ and a host ie mydomain.com
Can anyone Help?

Thank you
Mark

 

[Cor]

Hi Mark,

Never add your question to the question from someone else in a newsgroup.

To get your problem place it in the start,

In the meanwhile you can try this search in our Newsgroup Outlook and Regex
expert.

http://groups.google.com/groups?hl=en&lr=&ie=ISO-8859-1&q=jay+b+harlow+regex+&btnG=Google+Search

I hope this helps,

Cor

 

[Jay B. Harlow [MVP - Outlook]]

Mark,
In addition to Cor's link, 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

 

[steve]

here's a vb 6 example that validates based on the rfc...the pattern is
what's useful...modify for .net as needed.

hth,

steve


Function isEmailAddress(ByVal email As String) As Boolean
Dim reExpression As RegExp
Set reExpression = New RegExp
reExpression.Global = True
reExpression.Pattern =
"^(""[a-zA-Z0-9\$%&'\*\+\-/\?\^_`\{\|\}\~]*[^a-zA-Z0-9\$%&'\*\+\-/\?\^_`\{\|
\}\~""]+[a-zA-Z0-9\$%&'\*\+\-/\?\^_`\{\|\}\~]*"")|([a-zA-Z0-9\$%&'\*\+\-/\?\
^_`\{\|\}\~])([a-zA-Z0-9\$%&'\*\+\-/\?\^_`\{\|\}\~\.]*)@(\[((25[0-5]|2[0-4][
0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\.){3}|((([a-zA-Z0-9\-]+)\.)+))([a-zA-Z]{2
,}|(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\])$"
isEmailAddress = reExpression.Test(email)
End Function