Send user back to last page actually opened

[David Krussow]

I'm implementing ASP.NET Forms authentication. On the login form I want to
include a "Cancel" button that , when clicked, will allow users who decide
to *not* log in to return to the last page they actually opened. This would
be the equivalent of the user clicking the Back button in the browser.

Sending them to Response.Redirect(Request.Params["ReturnURL"]) from within
the login page won't work because the ReturnUrl page is the one that they
were trying to open but required authentication - the very thing they are
trying to back out of.

Any suggestions?

Thanks

 

[Steve C. Orr [MVP, MCSD]]

You could execute some client side javascript like this:
history.go(-1);

Here's more info:
http://www.devguru.com/Technologies/ecmascript/quickref/history_go.html