private void VsetkoKataster_KeyUp(object sender, KeyEventArgs e) { if (e.Key == Key.Enter) { try { var cisKatastra = int.Parse(VsetkoKataster.Text); VsetkoListyKatastra.ItemsSource = AfrikaKataster.Uloha19CisloKat(cisKatastra); VsetkoNehnutelnostiKatastra.ItemsSource = AfrikaKataster.UlohaVsetkoNehnutelnosti(cisKatastra); } catch (Exception) { MessageBox.Show("Zle zadany kataster cislo", "Err"); } } }