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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>
 




_________________
M. S. Rakha, Ph.D.
Queen's University
Canada


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Topic Tags

ASP Validation, ASP Email
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