protected void btn_Ok_Click(object sender, EventArgs e)

        {

            for (int i = 0; i < GridView1.Rows.Count; i++)

            {

                CheckBox cka = (CheckBox)GridView1.Rows[i].FindControl("chkid");

                if (cka.Checked)

                {



                    int id = Convert.ToInt32(GridView1.DataKeys[i].Value.ToString());



                    string  strsql = "delete from orders where id='" + id + "'";



                    string strsql123 = "select pdfPath from orders where id ='" +id+ "'";

                      DataRow drw = DBFun.GetDataRow(strsql123);

                    

                       string filename = drw["pdfPath"].ToString();



                       string path = Server.MapPath("..//uploadpic//" + filename);

                       System.IO.File.Delete(path);

                           if (DBFun.ExecuteUpdate(strsql))

                           {

                               ltl_Msg.Text = "删除成功！";

                               DataView dvlist = DBFun.GetDataView("select * From orders order by id desc");

                               AspNetPager1.RecordCount = dvlist.Table.Rows.Count;

                               Session["dvlist"] = dvlist;