public ActionResult AddDiagnosis(AddDiagnosisViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return(View(model));
            }

            var db = new ApplicationDbContext();

            var diagnosis = new Diagnosis
            {
                DiagnosisName = model.DiagnosisName
            };

            db.Diagnoses.Add(diagnosis);
            db.SaveChanges();

            return(RedirectToAction("Index", new { message = DiagnosisMessageId.AddDiagnosisSuccess }));
        }
        public ActionResult AddDiagnosis()
        {
            var model = new AddDiagnosisViewModel();

            return(View(model));
        }