public ActionResult New(DiagnosisNewViewModel model)
 {
     if (ModelState.IsValid)
         if (model.Add(provider))
         {
             DiagnosisViewModel listModel = new DiagnosisViewModel(provider);
             return PartialView("DiagnosisListPartial", listModel);
         }
     return PartialView(model);
 }
 public ActionResult NewPartial()
 {
     DiagnosisNewViewModel model = new DiagnosisNewViewModel(provider);
     return PartialView(model);
 }