Best way to handle Return URLs in an MVC environment

public ActionResult MembersReport(int? id)

        {

            Session["CurrentUrl"] = Request.Url.ToString();

            // do whatever you want with your model...

            return View();

        }

        [HttpPost]

        public ActionResult EditMembers()

        {

            // do whatever you want with your model...

           return Session["CurrentUrl"] == null ? MembersReport(null) : Redirect(Session["CurrentUrl"].ToString());

        }