private void SetData()
        {
            ClearForm();
            dgRekeningen.ItemsSource = BC.AllRekeningen();
            List <String> Fullnames = new List <String>();

            BSNs = new List <String>();
            foreach (Klanten K in db.Klantens)
            {
                Fullnames.Add(K.Voornaam + " " + K.Achternaam);
                BSNs.Add(K.BSN);
            }
            cbKlanten.ItemsSource     = Fullnames;
            cbTypes.ItemsSource       = TC.AllTypen();
            cbTypes.DisplayMemberPath = "Naam";
        }
 private void SetData()
 {
     ClearForm();
     dgTypen.ItemsSource = TC.AllTypen();
 }