public ActionResult AddOrder(int?id) { var clientID = Request.Form["User.Id"]; var hostID = Request.Form["Verkoper.Id"]; var quantity = Request.Params["Quantity"]; string message = ""; Product product = PLogic.ByID(Convert.ToInt32(id)); message = OLogic.AddOrder(Convert.ToInt32(clientID), Convert.ToInt32(hostID), Convert.ToInt32(id), Convert.ToInt32(quantity)) + OLogic.KoppelTabelOrder(Convert.ToInt32(clientID), Convert.ToInt32(hostID), Convert.ToInt32(id), Convert.ToInt32(quantity)); if (message == "succes") { Session["Order"] = message; return(RedirectToAction("ViewProducts", "Product")); } return(View()); }