Question

Basically I have a page named dvds.asp with a form that goes to action="process.asp". The process.asp script validates the Name, Surname and Email fields. I would like that if the email does not exist, a redirect will occur to the original page (dvd.asp) and also display a custom error.

The validation of the email field and redirect I know how to do. The only problem is how I am going to get the custom error value in the dvds.asp.

Any help please? 🙂

FYI:

I am using this code in process.asp to validate:

if txtEmail = "" then
Server.Transfer(Request.ServerVariables("HTTP_REFERER"))
else

Now the error I want to show on the dvds.asp page is: “Please fill in your email” .. How I can do that please?

Answer 1

Hard to say without seeing any source, (For instance, how are you validating the email? What is this “Custom error value”?

Assuming you have a function that validates the email and returns false if it fails and the matching error value is “1” then you could simply include this in your redirect:

Dim EmailAddress
EmailAddress = Request.Form("EmailAddress")
If ValidateEmail(EmailAddress) = False Then
    Response.Redirect("dvd.asp?ErrorID=1")
End If

and on the Origional Source page, you could just display errors back to the user as follows:

   '#### Output errors
    If Trim(Request.QueryString("ErrorID")) <> "" Then
        Select Case Request.QueryString("ErrorID")
            Case "1" ' #### Email Error
                Response.Write("<p><span style=""color: red"">Error: Invalid email address</span></p>")
            Case "2" ' #### Bad Name
                Response.Write("<p><span style=""color: red"">Error: Invalid Name</span></p>")
            Case Else
                Response.Write("<p><span style=""color: red"">Error: Unknown / Generic Error</span></p>")
        End Select
    End If

One small suggestion by the way, its often preferable for pages such as this to post to the same page and include any email functionality you need from a class / SSI. That way you cold auto-populate the form again if an error occurred rather than expecting your end user to re-type the whole form if they get an error.