private void Form1_Load(object sender, EventArgs e)
{
orderService = new OrderService.OrderService();
OrderService.Order order = new Order(1, "a", new List <OrderItem>());
order.AddItem(new OrderService.OrderItem(1, "apple", 100.0, 10));
orderService.AddOrder(order);
OrderService.Order order2 = new Order(2, "b", new List <OrderItem>());
order2.AddItem(new OrderService.OrderItem(1, "applepen", 100.0, 10));
orderService.AddOrder(order2);
orderBindingSource.DataSource = orderService.Orders;
}
