// 调用事件函数
public void OnDataChange(object sender, UpdateOrderEventArgs args)
{
if (UpdateOrder != null)
{
UpdateOrder(this, args);
}
}
public void UpdateOrder(object sender, UpdateOrderEventArgs args)
{
Order order = new Order(args.ID, args.Customer, args.Items);
// 更新窗体控件
if (!(orders.Contains(order)))
{
MessageBox.Show($"Update Order Error: Order with id {order.OrderId} did not exists!");
}
os.UpdateOrder(order);
}
