public static void PaymentConfirmed()
{
List <ProcessingOrder> processingOrders;
if (UserSingleton.GetInstance.IsAuthenticated)
{
processingOrders = UserSingleton.GetInstance.ProcessingOrders;
List <PastOrder> pastOrders = PastOrderFactory.CreateSeveral(processingOrders, UserSingleton.GetInstance.User);
pastOrders.ForEach(p => p.RecordInDb());
UserSingleton.GetInstance.PastOrders.AddRange(pastOrders);
UserSingleton.GetInstance.ProcessingOrders.Clear();
}
UserSingleton.VisitorProcessingOrders.Clear();
}