public NoteViewModel(INavigationService navigationService)
        {
            Messenger.Default.Register<Tuple<int, List<Note>>>(this,
             tuple =>
             {
             DataServiceNote dsNote = new DataServiceNote();
             this.Note = dsNote.getNoteById(tuple.Item1);
             NoteList = tuple.Item2;
             TripId = Note.Trip.Id;
             });

            Messenger.Default.Register<int>(this,
            note =>
            {
            DataServiceNote dsNote = new DataServiceNote();
            this.Note = dsNote.getNoteById(note);
            TripId = Note.Trip.Id;
            });
            this._navigationService = navigationService;
        }
 private Note GetNoteInDB(int noteId)
 {
     DataServiceNote dsNote = new DataServiceNote();
     return dsNote.getNoteById(noteId);
 }