DateTime dtime = DateTime.Now;
                string FileName = dtime.Year.ToString() + "-" + dtime.Month.ToString() + "-" + dtime.Day.ToString() 
                    + "~" + dtime.Hour.ToString() + "-" + dtime.Minute.ToString() + "-" + dtime.Second.ToString() + "-" + dtime.Millisecond.ToString() + ".doc";
                string Path = Server.MapPath("../PhoneSN_doc/" + FileName);

                StreamWriter sr = File.CreateText(Path);
                StringWriter tw = new StringWriter();
                HtmlTextWriter hw=new HtmlTextWriter(tw);
                //tb0.RenderControl(hw);
                tb1.RenderControl(hw);
                tb2.RenderControl(hw);
                tb3.RenderControl(hw);
                tb4.RenderControl(hw);
                tb8.RenderControl(hw);
                tb5.RenderControl(hw);
                tb6.RenderControl(hw);
                tb7.RenderControl(hw);
                sr.Write(tw.ToString());
                tw.Close();
                sr.Close();

                System.IO.FileInfo file = new System.IO.FileInfo(Path);
                Response.Clear();

                Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);


                Response.AddHeader("Content-Length", file.Length.ToString());

                Response.ContentType = "application/octet-stream";

                Response.WriteFile(file.FullName);

                Response.End();