public static Order AddOrder(this OrderData orderData, Customer customer, DateTime orderDate)
{
int orderNumber = orderData.Any() ? orderData.Max(m => m.OrderNumber) + 1 : OrderData.OrderNumberSeed;
Order order = new Order()
{
CustomerNumber = customer.CustomerNumber, OrderNumber = orderNumber, OrderDate = orderDate, OrderDetails = new List <string>()
};
orderData.Add(order);
return(order);
}
