public StocksDetailPage()
        {
            InitializeComponent();

            var stock = new Stock
            {
                //Text = "Item 1",
            };

            viewModel      = new StocksDetailViewModel(stock);
            BindingContext = viewModel;
        }
        public StocksDetailPage(StocksDetailViewModel viewModel)
        {
            InitializeComponent();

            BindingContext = this.viewModel = viewModel;
        }