public ActionResult Create(Note note)
 {
     if (ModelState.IsValid) {
         noteRepository.InsertOrUpdate(note);
         noteRepository.Save();
         return RedirectToAction("Index");
     } else {
         ViewBag.PossibleTasks = taskRepository.All;
         return View();
     }
 }
 public void InsertOrUpdate(Note note)
 {
     if (note.NoteId == default(int)) {
         // New entity
         note.CreatedOn = note.ModifiedOn = DateTime.UtcNow;
         context.Notes.Add(note);
     } else {
         // Existing entity
         note.ModifiedOn = DateTime.UtcNow;
         context.Entry(note).State = EntityState.Modified;
     }
 }