private void Purchase_Click(object sender, RoutedEventArgs e)
{
// if there's no items ther's nothing to buy
if (Shopping_Cart.Items.Count != 0)
{
//update the cart to nothing and the products to remove the quantity bought
customer_service.Update_Products_And_Supply_After_Purchase(Shopping_Cart.ItemsSource as IEnumerable <ShoppingCartItem>);
//refresh the listviews
Products.ItemsSource = customer_service.GetAllProducts();
Shopping_Cart.ItemsSource = customer_service.GetAllShoppingCartItems();
ShoppingCart_Block.Text = $"Cart {customer_service.Total_Price(Shopping_Cart.ItemsSource as IEnumerable<ShoppingCartItem>):c}";
}
}
public MainPage()
{
this.InitializeComponent();
customer_service = new Customer_Service();
Products.ItemsSource = customer_service.GetAllProducts();
Shopping_Cart.ItemsSource = customer_service.GetAllShoppingCartItems();
ShoppingCart_Block.Text = $"Cart {customer_service.Total_Price(Shopping_Cart.ItemsSource as IEnumerable<ShoppingCartItem>):c}";
}