public void AddToInvoices(Invoice invoice)
{
base.AddObject("Invoices", invoice);
}
public static Invoice CreateInvoice(string customerName, string salesperson, int orderID, string shipperName, int productID, string productName, decimal unitPrice, short quantity, float discount)
{
Invoice invoice = new Invoice();
invoice.CustomerName = customerName;
invoice.Salesperson = salesperson;
invoice.OrderID = orderID;
invoice.ShipperName = shipperName;
invoice.ProductID = productID;
invoice.ProductName = productName;
invoice.UnitPrice = unitPrice;
invoice.Quantity = quantity;
invoice.Discount = discount;
return invoice;
}