private void btStandartDelete_Click(object sender, EventArgs e) { switch (MessageBox.Show("Удалить запись " + lstbStandart.Text + "?", "Справочник \"Стандарты\"", MessageBoxButtons.YesNo, MessageBoxIcon.Question)) { case DialogResult.Yes: procedure.spStandard_Delete(Convert.ToInt32(lstbStandart.SelectedValue.ToString())); break; case DialogResult.No: break; } }