private void DG_Hyperlink_Click(object sender, RoutedEventArgs e)
        {
            var rowData = ((Hyperlink)e.OriginalSource).DataContext as LunchOrder;

            Console.WriteLine("Update " + rowData.Id);

            var window = new LunchOrderDetail(this, rowData.Id);

            window.Show();
        }
        private void BtnNewOrder_Click(object sender, RoutedEventArgs e)
        {
            LunchOrderDetail wndOrderDetai = new LunchOrderDetail(this, 0);

            wndOrderDetai.Show();
        }