public static Boolean processOrder(List <PurchaseOrder> orders)
        {
            ManufacturerDAO datalayer = new ManufacturerDAO();

            foreach (PurchaseOrder order in orders.ToList())
            {
                Manufacturer manufacturer = datalayer.getSingleManufacturer(order.manufacturer.name);
                order.manufacturer = manufacturer;
            }

            PurchaseOrderXMLWritter xmlWritter = new PurchaseOrderXMLWritter();

            return(xmlWritter.writePurchaseOrders(orders));
        }
        public static Boolean processOrder(List<PurchaseOrder> orders)
        {
            ManufacturerDAO datalayer = new ManufacturerDAO();
            foreach (PurchaseOrder order in orders.ToList())
            {
                Manufacturer manufacturer = datalayer.getSingleManufacturer(order.manufacturer.name);
                order.manufacturer = manufacturer;
            }

            PurchaseOrderXMLWritter xmlWritter = new PurchaseOrderXMLWritter();
            return xmlWritter.writePurchaseOrders(orders);
        }