private void button1_Click_1(object sender, EventArgs e) { var selectedPodcast = listPodcast.SelectedItems[0].Text; if (selectedPodcast.Length >= 1) { var podcast = service.Get(int.Parse(selectedPodcast)); podcast.Category = txtChooseCategory.Text; podcast.RefreshInterval = int.Parse(cbxFrekvens.Text); podcast.Name = txtTitel.Text; service.Save(podcast); service.Serialize(); } }