public ActionResult Input(Shipper model) { try { if (string.IsNullOrEmpty(model.CompanyName)) { ModelState.AddModelError("CompanyName", "CompanyName expected"); } if (string.IsNullOrEmpty(model.Phone)) { model.Phone = ""; } if (!ModelState.IsValid) { ViewBag.Title = model.ShipperID == 0 ? "Create new Shipper" : "Edit a Shipper"; return(View(model)); } if (model.ShipperID == 0) { CataLogBLL.AddShipper(model); } else { CataLogBLL.UpdateShipper(model); } return(RedirectToAction("Index")); } catch (Exception ex) { ModelState.AddModelError("Loi", ex.StackTrace); return(View(model)); } }