validate email address in asp

Fri Apr 08, 2011 8:55 pm

validate email address in asp using Regular expressions , it is the easy way to test user email address .

Code:: <% ' Following function validate the email address using Regular expressions. ' You can use this function to validate user input. End Sub Function validateEmail(ByVal strEmailAddress) 'our variables Dim objRegularExpression, blnEmailValid ' create instance of regular expression object. objRegularExpression = New Regex 'this is a well known regular expression for email validation. objRegularExpression.Pattern = "^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$" 'test the email against the pattern , blnEmailValid = objRegularExpression.Test(strEmailAddress) If blnEmailValid Then 'email is valid . Response.Write(strEmailAddress & "is a valid email address .<br>") Else 'display this if it is an invalid email address Response.Write(strEmailAddress & "is invalid email address .<br>") End If End Function %> <P>Test Example codemilesfe3r@er : <%CheckMail("codemilesfe3r@er") invalid email %> </P>