1、读取xml格式的字符串

假设有一段下面的xml格式的字符串:

 <xml>

     <return_code><![CDATA[SUCCESS]]></return_code>

     <return_msg><![CDATA[OK]]></return_msg>

 </xml>

定义类ClientResponseHandler.cs

public class ClientResponseHandler{      protected Hashtable xmlMap;       /* 设置xml字符串 */        public virtual void setContent(string content)        {            this.content = content;            XmlDocument xmlDoc = new XmlDocument();            xmlDoc.LoadXml(content);            XmlNode root = xmlDoc.SelectSingleNode("xml");            XmlNodeList xnl = root.ChildNodes;            foreach (XmlNode xnf in xnl)            {                xmlMap.Add(xnf.Name, xnf.InnerText);            }        }                 /* 设置xml字符串 */        public virtual void setContent(string content)        {            this.content = content;            XmlDocument xmlDoc = new XmlDocument();            xmlDoc.LoadXml(content);            XmlNode root = xmlDoc.SelectSingleNode("xml");            XmlNodeList xnl = root.ChildNodes;            foreach (XmlNode xnf in xnl)            {                xmlMap.Add(xnf.Name, xnf.InnerText);            }        }}

调用：

rescontent = "";  //假设这里是一段xml格式的字符串ClientResponseHandler resHandler = new ClientResponseHandler();resHandler.setContent(rescontent);string return_code = resHandler.getMpParameter("return_code"); //return_code是xml节点名称，返回SUCCESS  string return_msg = resHandler.getMpParameter("return_msg"); //return_code是xml节点名称,返回OK

2、从上下文（Context）读取xml文件流

假设上下文中（Context）包含一段xml的字符串文件流，同上面格式。

public class ResponseHandler{    private Hashtable xmlMap;       public ResponseHandler(HttpContext httpContext)    {        if (this.httpContext.Request.InputStream.Length > 0)        {            XmlDocument xmlDoc = new XmlDocument();            xmlDoc.Load(this.httpContext.Request.InputStream);//这里与上面不同            XmlNode root = xmlDoc.SelectSingleNode("xml");            XmlNodeList xnl = root.ChildNodes;                           foreach (XmlNode xnf in xnl)            {                                    xmlMap.Add(xnf.Name, xnf.InnerText);            }        }    }  /* 获取参数值 */    public string getMpParameter(string parameter)    {        string s = (string)xmlMap[parameter];        return (null == s) ? "" : s;    }}

调用：

ResponseHandler resHandler = new ResponseHandler(Context);//Context 是HttpContext string return_code = resHandler.getMpParameter("return_code"); //return_code是xml的节点,返回SUCCESSstring return_msg = resHandler.getMpParameter("return_msg"); //return_msg是xml的节点,返回OK