public ActionResult Add_Package_ToCart(int?id) { if (Session["Customer_id"] != null) { Session["Cart"] = Offer.Add_Package_ToCart(id.Value, (Session["Customer_id"]).ToString()); return(RedirectToAction("Details", new { id = Offer.campaignId(id.Value) })); } else { return(RedirectToAction("Login", "MyAccount")); } }