public ActionResult AddRootConcept(String subjectId)
 {
     Int32 currentSubjectId = 0;
     var conceptViewModel = new AddOrEditRootConceptViewModel(WebSecurity.CurrentUserId, 0);
     if (Int32.TryParse(subjectId, out currentSubjectId))
         conceptViewModel.SelectedSubjectId = currentSubjectId;
     return PartialView("_AddRootConceptForm", conceptViewModel);
 }
 public ActionResult EditRootConcept(Int32 id)
 {
     var conceptViewModel = new AddOrEditRootConceptViewModel(WebSecurity.CurrentUserId, id);
     return PartialView("_AddRootConceptForm", conceptViewModel);
 }
 public ActionResult SaveRootConcept(AddOrEditRootConceptViewModel model)
 {
     model.Save();
     return null;
 }