private void btnAddDrzava_Click(object sender, EventArgs e) { try { DrzavaForm form = new DrzavaForm(null); if (form.ShowDialog() == DialogResult.OK) { Drzava d = (Drzava)form.Entity; drzave.Add(d); drzave.Sort(); setDrzave(drzave); SelectedDrzava = d; } } catch (InfrastructureException ex) { MessageDialogs.showError(ex.Message, this.Text); } }