gistfile1.txt

_api.PurchaseOrders.Create(new PurchaseOrder()
            {
                Contact = new Contact()
                {
                    ContactNumber = "C0001"
                },
                Number = "4920249",
                LineItems = new List<LineItem>()
                {
                    new LineItem() {
                        UnitAmount = 30.33M,
                        Description = "Plant Hire",
                        Quantity = 2,
                        AccountCode = "200",
                        TaxType = "NONE"
                    },
                    new LineItem() {
                        UnitAmount = 35.33M,
                        Description = "Car Hire",
                        Quantity = 1,
                        AccountCode = "200",
                        TaxType = "NONE"
                    }
                }
            });