public NoteListPageViewModel(IMvxNavigationService navigationService, INoteManageService noteManageService)
        {
            _navigationService = navigationService;
            _noteManageService = noteManageService;

            NavigateToDetailCommand = new MvxAsyncCommand <Note>(NavigateToDetail);
            AddNewNoteCommand       = new MvxAsyncCommand(CreateNewNote);
        }
 public NoteDetailViewModel(IMvxNavigationService navigationService, INoteManageService noteManageService)
 {
     this._navigationService = navigationService;
     this._noteManageService = noteManageService;
 }