Referring URL

[devylzangel]

I know this is a simple thing, usually, but for some reason I just can't figure out how to do it:

 

On my Page_Load Event (.vb side), I need to capture the URL from the previous (referring) page and hold it in a variable or in a label that is not visible on my page.

 

An example:

I got to http://www.yahoo.com and click on Yahoo! Auctions. On the Page_Load Event of the Yahoo! Auctions page, I need to set myurl = http://www.yahoo.com.

 

Can anyone tell me how to do this using VB.NET?

[bri189a]

I know what your talking about, I've done it in the past, just can't find the code, check MSDN under the window or document object; one of those if I remember right has a property for the previous page... sorry that's all I got, someone I'm sure will give you the exact though.

[Robby]

If the previous page is always from your own server then have a look at this sample... http://www.xtremedotnettalk.com/showthread.php?s=&threadid=78434

[Derek Stone]

[msdn=System.Web.HttpRequest]Request.UrlReferrer[/msdn]

[devylzangel]

I have tried using Request.UrlReferrer and I always get an error.

Below is the code I used:

 

Private myurl As Uri

myurl = Request.UrlReferrer 'in my page_load event

 

Response.Redirect(myurl.AbsoluteUri) 'button_click event

 

I am probably way off base an completely wrong in the way that I am trying to do this, but I found an article on msdn where they said to do it this way. The error that I get says that the Object reference is not set to an instance of an object (my favorite error...). When stepping through the code in debug mode, I see that when I am tryiing to set the myurl variable, it is = to nothing.

 

Does anyone know what I'm doing wrong?

Edited November 3, 2003 by devylzangel

[Derek Stone]

Unless Request.UrlReferrer is a null reference then Response.Redirect(Request.UrlReferrer.ToString()) should work. Being as you mentioned a null reference exception it is highly likely a HTTP_REFERRER header wasn't set by the client, either because of a firewall, a proxy server, or some other filter or intermediary.