private void cboxVeh_SelectedIndexChanged(object sender, EventArgs e) { DialogResult resul = mf.FileOpenEnvironment(mf.envDirectory + cboxEnv.SelectedItem.ToString() + ".txt"); if (resul == DialogResult.OK) { DialogResult = DialogResult.OK; } else if (resul == DialogResult.Abort) { DialogResult = DialogResult.Abort; } else { DialogResult = DialogResult.Cancel; } Close(); }