public TransportMain()
        {
            InitializeComponent();
            using(TransportServiceClient tsc = new TransportServiceClient())
            {
                this.lastTransportResult = tsc.getAlleTransportMiddelen();

                 transportType[] tt = tsc.getAlleTransportTypes();

                foreach (transport tr in this.lastTransportResult)
                {
                    transportType ttp = new transportType();
                    foreach(transportType t  in tt)
                    {
                        if(t.type_id == tr.type_id)
                        {
                            ttp = t;
                            break;
                        }
                    }

                    listBox1.Items.Add("[" + ttp.naam + "] " + tr.omschrijving);
                }
            }
        }