How do you read a parameter from the URL?
I am trying to use the login.aspx page in such a way that when a
user tries to access any given page, it will redirect them to the login screen
if they are not authenticated and after a successful authentication go back to
the page they were trying to access. My issue is that when I go to the page and
get redirected, I don’t go back to the page I came from. Here is a sample of
what my login.aspx page has for an URL:
As you can tell, ASP.Net is smart enough to include the return to
URL, however, how can I make use of that to redirect my users back to that page? Also, in general, how can you read a parameter in the URL query string?
The following code would address the issue. Note that you can read any Paramater by doing a QueryString from the Request. ReturnUrl is the one that pertains to this particular example:
if (Request.QueryString["ReturnUrl"] != null)
string ReturnUrl = Request.QueryString["ReturnUrl"].Trim();
//Navigate to the ReturnUrl
//Navigate to a specific home page