XmlNodeList students = doc.DocumentElement.ChildNodes;//Student节点集合

foreach (XmlNode stu in students)

{

    XmlElement element = (XmlElement)stu;

    string stuId = element.GetAttribute("StuID");

    XmlNode nameNode = element.SelectSingleNode("StuName");//获取Person节点的Name节点

    string name = nameNode.InnerText;

    Console.WriteLine(stuId + "," + name);

}

public static void WriteTOXmlStatusLog(string responseStr)

{

      string pathConfig = App.GetSetting("TracePath");

      if (!string.IsNullOrWhiteSpace(pathConfig))

      {

          try

          {

              Log4NetTraceListener log = new Log4NetTraceListener(pathConfig + @"\UserInterface");

              var doc = new System.Xml.XmlDocument();

              doc.LoadXml(responseStr); 
                string error = "";

                    var errorNode = doc.SelectSingleNode("/returnsms/errorstatus/error");

                    if (errorNode != null)

                    {

                        error = errorNode.InnerText;

                    }

                    if (string.IsNullOrWhiteSpace(error))

                    {

                        XmlNodeList callboxList = doc.DocumentElement.ChildNodes;

                        foreach (XmlNode item in callboxList)

                        {

                            XmlElement element = (XmlElement)item;

                            string mobile= element.GetElementsByTagName("mobile")[].InnerText;

                            //string mobile = element.SelectSingleNode("/statusbox/mobile").InnerText;

                            string taskid = element.GetElementsByTagName("taskid")[].InnerText;

                            string status = element.GetElementsByTagName("status")[].InnerText;

                            string receivetime = element.GetElementsByTagName("receivetime")[].InnerText;

                            string extno = element.GetElementsByTagName("extno")[].InnerText;

                            string errorcode = element.GetElementsByTagName("errorcode")[].InnerText;

                            log.WriteLine("获取状态报告返回xml信息：" + "mobile：" + mobile + "，taskid:" + taskid + "，status:" + status + "，receivetime:" + receivetime + ",errorcode:" + errorcode + "，extno:" + extno);

                        }

                    }

                    else

                    {

                        string remark = doc.SelectSingleNode("/returnsms/errorstatus/remark").InnerText;

                        log.WriteLine("获取状态报告返回xml信息：error:" + error + ",remark:" + remark);

                    }

                }

                catch (Exception ex)

                {

                    throw new Exception("获取xml状态报告信息写入日志出错：" + ex);

                }
}

//错误时的返回
<?xml version="1.0" encoding="utf-8" ?>

<returnsms>

<errorstatus>

<error></error>-------------错误码

<remark>用户名或密码不能为空</remark>-------------错误描述

</errorstatus>

</returnsms>

//正确时的返回

<?xml version="1.0" encoding="utf-8" ?>

<returnsms>

<statusbox>

<mobile></mobile>-------------对应的手机号码

<taskid></taskid>-------------同一批任务ID

<status></status>---------状态报告----：发送成功，：发送失败

<receivetime>-- ::</receivetime>-------------接收时间

<errorcode>DELIVRD</errorcode>-上级网关返回值，不同网关返回值不同，仅作为参考

<extno></extno>--子号，即自定义扩展号

</statusbox>

<statusbox>

<mobile></mobile>

<taskid></taskid>

<status></status>

<receivetime>-- ::</receivetime>

<errorcode></errorcode>

<extno></extno>