how to know if the referrer is an alias?

[elic05]

I have a domain name that is an alias
the primary domain name and the alias are pointing to the same web page
If someone used the alias, i want him to be directed to another page.

i tried

If Request.UrlReferrer.AbsoluteUri = myAlias Then
            Response.Redirect("~/album.aspx")
        End If

but the referrer is always nothing

 

[JohnH]

I don't see how UrlReferrer is relevant. If anything you should look at Request.Url.