protected void BtnDelete_Click(object sender, EventArgs e) { CheckBox cb; int key; LabMS.BLL.ResearchResult bll = new LabMS.BLL.ResearchResult(); for (int i = GridViewResultList.Rows.Count - 1; i > -1; i--) { cb = (CheckBox)GridViewResultList.Rows[i].FindControl("CBSelect"); if (cb.Checked) { key = int.Parse(GridViewResultList.DataKeys[i].Value.ToString()); bll.Delete(key); } } BindData(); WriteBackScript("alert('�ѳɹ�ɾ���������')"); }