public ActionResult Index() { DropBox dropbox = new DropBox( "http://localhost:10493/DropBoxOAuth/callback", "ulinnbzqxokqxbc", "xvjv5j2lokymztr", "email"); string redirectUrl = null; dropbox.ReadyRedirect += (s, e) => { redirectUrl = e.RedirectUrl; }; dropbox.RequestToken(); TempData["oauth"] = dropbox; return(Redirect(redirectUrl)); }