private void newOrderButton_Click(object sender, EventArgs e)
{
Order newOrder = new Order(orderDateTxtBox.Text);
orderRepo.AddAOrderToList(newOrder);
orderDateTxtBox.Clear();
orderDateTxtBox.Enabled = false;
newOrderButton.Enabled = false;
productSelectionComboBox.Enabled = true;
orderLineQuantityTxtBox.Enabled = true;
addToOrderBtn.Enabled = true;
}
