public void Setup()
{
manager = new OrderDetailManager();
orderDetail1 = new OrderDetail {
name = "", quantity = 2, ProductID = 13, OrderID = 5
};
orderDetail2 = new OrderDetail {
name = "", quantity = 3, ProductID = 10, OrderID = 3
};
manager.AddNew(orderDetail1);
manager.AddNew(orderDetail2);
}