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Asked: 2026-05-10T16:41:05+00:00

In an aspx C#.NET page (I am running framework v3.5), I need to know

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In an aspx C#.NET page (I am running framework v3.5), I need to know where the user came from since they cannot view pages without logging in. If I have page A (the page the user wants to view) redirect to page B (the login page), the Request.UrlReferrer object is null.

Background: If a user isn’t logged in, I redirect to the Login page (B in this scenario). After login, I would like to return them to the page they were requesting before they were forced to log in.

UPDATE:
A nice quick solution seems to be:
//if user not logged in Response.Redirect('..MyLoginPage.aspx?returnUrl=' + Request.ServerVariables['SCRIPT_NAME']);
Then, just look at QueryString on login page you forced them to and put the user where they were after successful login.

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1 Answer

  1. If you use the standard Membership provider, and set the Authorization for the directory/page, the code will automatically set a query parameter of ReturnUrl and redirect after a successfull login.

    If you don’t want to use the Membership provider pattern, I would suggest manually doing the query string parameter thing as well. HTTP referrers are not very reliable.

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