//
   xmlelement root = doc.documentelement;
   doc.insertbefore(xmldecl, root);  
   //設置根結點
   xmlelement newcompany = doc.documentelement;
   //創建新的name
   xmlelement newname = doc.createelement("name");
   newname.innertext = "公司名稱"; //公司名稱
   //加入父結點
   newcompany.appendchild(newname);
           
   xmlelement newinfo = doc.createelement("info");
   newinfo.innertext = "簡介"; //簡介
   newcompany.appendchild(newinfo);

   xmlelement newcontactinfo = doc.createelement("contactinfo");
   newcontactinfo.innertext = "網址"; //網址
   newcompany.appendchild(newcontactinfo);

   xmlelement newcontactperson = doc.createelement("contactperson");
   newcontactperson.innertext = "姓名"; //姓名
   newcompany.appendchild(newcontactperson);

   xmlelement newcontactzip = doc.createelement("contactzip");
   newcontactzip.innertext = "郵編"; //郵編
   newcompany.appendchild( newcontactzip );

   xmlelement newcontactadd = doc.createelement("contactadd");
   newcontactadd.innertext = "地址"; //地址
   newcompany.appendchild( newcontactadd );

   //工作列表
   //先創建jobs類表

   xmlelement newjobs = doc.createelement("jobs");
   newcompany.appendchild( newjobs );

   //dataset ds = new dataset();
   //if(ds!=null)
   //{
   //foreach(datarow dr in ds.tables[0].rows)
   for(int i=0;i<5;i++)
   {
    xmlelement newjob = doc.createelement("job");
    newjobs.appendchild( newjob );

    xmlelement newtitle = doc.createelement("title");
    newtitle.innertext = i.tostring(); //職位名稱
    newjob.appendchild( newtitle );

    xmlelement newurl = doc.createelement("url");
    newurl.innertext = "http://www.020job.com"; //網址
    newjob.appendchild( newurl );
   }
   //}

   //doc.documentelement.appendchild(newcompany);

   xmltextwriter tr = new xmltextwriter(server.mappath(random_str()),system.text.encoding.getencoding("gb2312"));
   doc.writecontentto(tr);
   tr.close();
  }

  private string random_str()
  {
   random oran = new system.random();
   string filename =
    datetime.now.year.tostring() +
    datetime.now.month.tostring() +
    datetime.now.day.tostring() +
    datetime.now.hour.tostring() +
    datetime.now.minute.tostring() +
    datetime.now.second.tostring() +
    oran.next(9999).tostring() +
    ".xml";

   return filename ;
  }