asked on Opposite of regex.matches?
Right now I'm using reg expressions to locate only valid email addresses within a long string. This string is a bunch of email addresses separated by a comma.
mc = Regex.Matches(strEmailAddr
How can I find out only the ones that do NOT match? ie that FAIL the regular expression?
mc = Regex.Matches(strEmailAddr
How can I find out only the ones that do NOT match? ie that FAIL the regular expression?
Visual Basic.NETASP.NET
Last Comment
wdosanjos
How is your string structured - ie how are email addresses split up within the string?
ASKER
Simple string. All email addresses separated by comma. Purpose of this function is to report back those email addresses which are invalid.
Example: "myaddress1@mail.com, myaddress2@mail.com, INVALID_EMAIL@, myaddress3@mail.com"
The function should return "INVALID_EMAIL@".
Example: "myaddress1@mail.com, myaddress2@mail.com, INVALID_EMAIL@, myaddress3@mail.com"
The function should return "INVALID_EMAIL@".
Try this:
Dim strEmailAddresses As String = "myaddress1@mail.com, myaddress2@mail.com, INVALID_EMAIL@, myaddress3@mail.com"
Dim emailAddr As String
For Each emailAddr in strEmailAddresses.Split(",")
emailAddr = emailAddr.Trim()
If Not Regex.IsMatch(emailAddr, "([a-zA-Z0-9_\-\.]+)@([a-zA-Z0-9_\-\.]+)\.([a-zA-Z]{2,5})") Then
Console.WriteLine("'{0}' invalid email address", emailAddr)
End If
Next
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rwheeler23
ASKER
For some reason this email address is passing when it should not: myemail.@mail.net
ASKER CERTIFIED SOLUTION
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ask a questionASKER
But will john.smith@att.net work? This is valid.
Yes, that works. I mean is a valid email, so Regex.IsMatch returns true.
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ASKER
Thanks. What is the reg ex statement to check if an email is valid?
Regex.IsMatch just returns true if the string provided matches the regular expression. In this case the regular expression is to validate the email address format.