private void productsListView_PreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e) { statusLabel.Content = "Detail product"; var db = new MyShopEntities(); dynamic itemProduct = (sender as ListView).SelectedItem; if (itemProduct != null) { // lấy sản phẩm trong database var product = db.Products.Find(itemProduct.Product_Id); // nếu Pick sản phẩm để tạo hóa đơn if (PickProductId != null) { PickProductId.Invoke(product); homeProduct.Children.Clear(); } else { var screen = new DetailProductScreen(product); screen.RefreshProductList = refresh; homeProduct.Children.Add(screen); } } }