private void btnEdit_Click(object sender, EventArgs e) { if (lbMovies.SelectedItem == null) { MessageBox.Show("Select a movie!"); } else { string element = lbMovies.SelectedItem.ToString(); AddForm frm = new AddForm(element); if (frm.ShowDialog() == DialogResult.OK) { lbMovies.Items.Add(frm.MyNewMovie); } } }