//As you remove a complete order from the LiveOrders list, it must go to the CancelledOrders list
//A Cancelled order may also need to be reinstated to Live again
//This is done via unique method RemoveCompletedOrder()
//Static method RemoveCompletedOrder() will allow a single completed order to be removed from
//one list and transferred to another and back again (e.g. from LiveOrders to CancelledOrders).
public static void RemoveAndTransfer(CompleteOrder completeOrder, CompleteOrders ListTransferredFrom, CompleteOrders ListTransferredTo)
{
//exception thrown if the order to be removed is not in the list it is being transferred from
if (ListTransferredFrom.Contains(completeOrder) == false)
{
throw new ArgumentException("This completed order is not currently in the list you are transferring FROM");
}
//Complete Order removed from current list and transferred to new list (denoted as ListTransferredTo)
else
{
ListTransferredFrom.Remove(completeOrder);
ListTransferredTo.Add(completeOrder);
}
} //end RemoveAndTransfer()
