I do it this way:
0) Create a base page class, and store the current page's url (you can do this any number of ways, so I'll leave it to your imagination):
public class MyBasepage : System.Web.UI.Page
{
public string CurrentUrl { get; set; }
}
1) Store the page's Url to a property in my base class (the Url property of the Page object isn't directly accessible outside it's own context). BTW, the Url property includes the entire URL, including the query string if there is one.
this.CurrentUrl = this.Url;
3) When the login page is ready to go back, do this:
MyBasePage lastPage = (MyBasePage)(Page.PreviousPage);
Response.Redirect(lastPage.CurrentURL);
I've been paid as a programmer since 1982 with experience in Pascal, and C++ (both self-taught), and began writing Windows programs in 1991 using Visual C++ and MFC. In the 2nd half of 2007, I started writing C# Windows Forms and ASP.Net applications, and have since done WPF, Silverlight, WCF, web services, and Windows services.
My weakest point is that my moments of clarity are too brief to hold a meaningful conversation that requires more than 30 seconds to complete. Thankfully, grunts of agreement are all that is required to conduct most discussions without committing to any particular belief system.
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