Is there a way to get the parent URL from an Ifram

问题:

I'm running an c# .net app in an iframe of an asp page on an older site. Accessing the Asp page's session information is somewhat difficult, so I'd like to make my .net app simply verify that it's being called from an approved page, or else immediately halt.

Is there a way for a page to find out the url of it's parent document?

回答1:

top.location.href

But that will only work if both pages (the iframe and the main page) are being served from the same domain.

回答2:

Request.UrlReferrer.... to get the URL

NameValueCollection qs = HttpUtility.ParseQueryString(Request.UrlReferrer.Query);... to digest query string

回答3:

parent.location.href

回答4:

Space, this URL might help you: http://geekswithblogs.net/ranganh/archive/2005/04/25/37635.aspx