protected void bt_Delete_Click(object sender, EventArgs e) { if ((int)ViewState["Insurance"] > 0) { foreach (ListItem item in cbl_ApplyCity.Items) { if (item.Selected) { PM_StdInsuranceCostInCityBLL c = new PM_StdInsuranceCostInCityBLL(); c.Delete(int.Parse(item.Value)); } } BindCheckBoxList(); } }