public void deserialize(TravelOffice travelOffice)
 {
     try
     {
         using (TextReader reader = new StreamReader(@"./mojedane.xml"))
         {
             travelOffice.Customers = (Customer[])serializer.Deserialize(reader);
             Console.WriteLine("Data loaded");
         }
     }
     catch (Exception e)
     {
         Console.WriteLine(e.Message);
     }
 }
        static void Main(string[] args)
        {
            //TravelOffice travelOffice = new TravelOffice();

            //XmlSerializer deserializer = new XmlSerializer(typeof(Customer[]), new Type[] { typeof(Trip), typeof(DomesticTrip), typeof(AbroadTrip) });

            ////Customer[] customers;

            //try
            //{
            //    using (TextReader reader = new StreamReader(@"./mojedane.xml"))
            //    {

            //        travelOffice.Customers = (Customer[]) deserializer.Deserialize(reader);

            //    }

            //}
            //catch (Exception e)
            //{
            //    Console.WriteLine(e.Message);
            //}

            SerializeXML serializer   = new SerializeXML();
            TravelOffice travelOffice = new TravelOffice();

            bool menu = false;

            while (!menu)
            {
                Helper.menu();



                switch (Helper.readcorrectkey("Chose option...: "))
                {
                case 1:
                    serializer.deserialize(travelOffice);
                    Helper.wait();
                    break;

                case 2:

                    Date start = new Date(2019, 11, 12);
                    Date end   = new Date(2019, 11, 30);

                    Date start1 = new Date(2019, 12, 12);
                    Date end1   = new Date(2019, 12, 30);

                    //Trip trip1 = new Trip(start, end, "Poznań");
                    //trip1.getPrice("Podaj cenę wycieczki 1: ");

                    Trip trip2 = new Trip(start1, end1, "Warszawa");
                    trip2.getPrice("Podaj cenę wycieczki 2: ");

                    Trip abroadTrip = new AbroadTrip(start1, end1, "Warszawa");

                    DomesticTrip domesticTrip = new DomesticTrip(start, end, "Poznań");

                    //klient 1
                    Customer customer1 = new Customer("Pan Darek");
                    Address  address1  = new Address("Kuśnierska 4", "62-020", "Swarzędz");

                    customer1.Address = address1;
                    customer1.Trip    = domesticTrip;


                    //klient 2
                    Customer customer2 = new Customer("Karolona Kowalska");
                    Address  address2  = new Address("Szkolna 20/3", "60-241", "Wrocław");

                    customer2.Address = address2;
                    customer2.Trip    = abroadTrip;


                    //klient 3
                    Customer customer3 = new Customer("Adam Nowak");
                    Address  address3  = new Address("Oryfeusza 18", "82-241", "Gdańsk");

                    customer3.Address = address3;
                    customer3.Trip    = trip2;


                    //dodanie klienta do bazy
                    travelOffice.AddCustomer(customer1);
                    travelOffice.AddCustomer(customer2);
                    travelOffice.AddCustomer(customer3);

                    Helper.wait();
                    break;

                case 3:
                    serializer.serialize(travelOffice.Customers);
                    Helper.wait();
                    break;

                case 4:
                    Console.WriteLine(travelOffice.getInfo());
                    Helper.wait();
                    break;

                case 5:
                    travelOffice.ClearCustomers();
                    Helper.wait();
                    break;

                case 6:
                    menu = true;
                    break;
                }
            }


            //raport z biura
        }