private void btnAlertRule_Delete_Click(object sender, EventArgs e)
        {
            DataGridViewSelectedRowCollection dr = gvAlertRule.SelectedRows;
            DialogResult result =
                MessageBox.Show(
                    "Confirm delete this record?",
                    "Confirm",
                    MessageBoxButtons.YesNo,
                    MessageBoxIcon.Question);

            if (result == DialogResult.Yes)
            {
                for (int i = 0; i < dr.Count; i++)
                {
                    string AlertName = dr[i]
                                       .Cells[AttributeHelper.GetColumnIndex <ConfigModel.AlertRule>("alertName")].Value.ToString();
                    ConfigUtil.DeleteAlertRuleByName(AlertName);
                }
            }

            RefreshConfig();
            initAlertRuleDataView();
            gvAlertRule.Update();
            gvAlertRule.Refresh();
        }