private void tsb_updatepoll_Click(object sender, EventArgs e)
        {
            if (dgv_setting.SelectedRows == null || dgv_setting.SelectedRows.Count == 0)
            {
                MessageBox.Show("请选择需要修改的记录!");
                return;
            }

            frmPollingSetting polling = new frmPollingSetting(this);
            polling.SettingDr = _settingDt.Rows[dgv_setting.SelectedRows[0].Index];
            polling.ShowDialog();
        }
 private void tsb_addpoll_Click(object sender, EventArgs e)
 {
     frmPollingSetting polling = new frmPollingSetting(this);
     polling.ShowDialog();
 }