public void CbSelectionChanged(object sender, SelectionChangedEventArgs e) { if (e.AddedItems.Count > 0) { if (e.AddedItems[0] is RegistryShare RS) { ActualRecord = _registryServices.GetShareById(RS.id_titolo); } else if (e.AddedItems[0] is RegistryFirm RF) { ActualRecord.id_azienda = RF.id_azienda; } else if (e.AddedItems[0] is RegistryShareType RST) { ActualRecord.id_tipo_titolo = RST.id_tipo_titolo; } } }