public LectionRatingDetailPage(LectionRatingDetailViewModel viewModel)
        {
            InitializeComponent();

            BindingContext = this.viewModel = viewModel;
            InitEntries();
        }
        public LectionRatingDetailPage()
        {
            InitializeComponent();

            var rating = new LectionRating
            {
                LectionName = "Test rating",
                VoteCode    = "xxxx"
            };

            viewModel      = new LectionRatingDetailViewModel(rating);
            BindingContext = viewModel;
            InitEntries();
        }