How to validate E-Mail Address Format

Question

I found following code from this link.

https://msdn.microsoft.com/en-us/library/01escwtf(v=vs.80).aspx

Function IsValidEmail(strIn As String) As Boolean
' Return true if strIn is in valid e-mail format.
Return Regex.IsMatch(strIn, "^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$")
End Function

I dont know how to use above code. I mean how to call above code?

To use it, you probably have to import System.Text.RegularExpressions, and then just call it like: If IsValidEmail("[email protected]") Then... — soohoonigan, Nov 30 '16 at 16:42
The code you posted is a function that takes a `String` as input and returns a `Boolean` to indicate if the format is valid for an e-mail address. — Blackwood, Nov 30 '16 at 16:42
Update title of the question - it is misleading for people who answers only based on title :) — Fabio, Nov 30 '16 at 16:48
The same. `If IsValidEmail("[email protected]") Then `valid format`. — Blackwood, Nov 30 '16 at 16:49
The page you referring to is obsolete and provide a link to newer version with code examples: [https://msdn.microsoft.com/en-us/library/01escwtf(v=vs.110).aspx](https://msdn.microsoft.com/en-us/library/01escwtf(v=vs.110).aspx) — Fabio, Nov 30 '16 at 16:50

score 1 · Accepted Answer · answered Nov 30 '16 at 16:46

1

you can use it as below

If IsValidEmail("[email protected]") Then
        'valid email
Else
       'invalid email
End If

answered Nov 30 '16 at 16:46

Damith

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How to validate E-Mail Address Format

1 Answers1