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4GuysFromRolla.com : ASP FAQS : Email


How can I validate an email address using VBscript?

[Print this FAQ]

Answer: Thanks to Anders Rask for porting the validation code to VBscript! Using regular expressions, you can validate an email address using the following code:

<title>VBscript email validation</title>


Dim emailAddress
emailAddress = Request("emailAddress")
if emailAddress <> "" then
  emailAddress = Cstr(emailAddress)
  if emailAddress <> "" then
    blnValidEmail = RegExpTest(emailAddress)
    if blnValidEmail then
      Response.Write("Valid email address")
      Response.Write("Not a valid email address")
    end if
  end if

Function RegExpTest(sEmail)
  RegExpTest = false
  Dim regEx, retVal
  Set regEx = New RegExp

  ' Create regular expression:
  regEx.Pattern ="^[\w-\.]{1,}\@([\da-zA-Z-]{1,}\.){1,}[\da-zA-Z-]{2,3}$"

  ' Set pattern:
  regEx.IgnoreCase = true

  ' Set case sensitivity.
  retVal = regEx.Test(sEmail)

  ' Execute the search test.
  If not retVal Then
    exit function
  End If

  RegExpTest = true
End Function

<form action="emailCheck.asp" method="post">
  <input type="text" name="emailAddress">
  <input type="submit" value="submit">

<%End If %>


For more information on Email validation, check out: Email Address Validation!

FAQ posted by shedao at 10/8/2000 2:07:02 PM to the Email category. This FAQ has been viewed 115,252 times.

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Last computed at 9/17/2007 3:22:00 AM

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