public ActionResult Edit(DiseaseViewModel model) { try { var svc = new DiseaseAppService(); var o = new Disease { DiseaseId= model.DiseaseId, Name = model.Name, DiseaseCategoryId=model.DiseaseCategory }; if (model.Action == "-1") { var exist = svc.GetDisease(model.DiseaseId)!=null; if (!exist) { svc.AddDisease(o); ViewBag.Feed = 0; } else { model.Action = "-1"; ViewBag.Feed = 3; return View(model); } } else { o.DiseaseId= model.DiseaseId; if (model.IsDeleteAction == 0) { svc.SaveDisease(o); } else { svc.RemoveDisease(model.DiseaseId); } ViewBag.Feed = 0; } } catch (Exception) { ViewBag.Feed = 1; } return View(model); }