dataList多级删除

    /// <summary>
    /// 多级删除
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    protected void btnDel_Click(object sender, EventArgs e)
    {

        newsManage news = new newsManage();
        for (int i = 0; i <= GridView1.Rows.Count - 1; i++)
        {
            CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("cbkSelect");
            if (cbox.Checked == true)
            {
                int newsID = Convert.ToInt32(GridView1.DataKeys[i].Value);
                news.deleteNewsInfo(newsID);

            }
        }
        cbkSelectAll.Checked = false;
        bindData();
    }