C#ÖÐ¶Ô XML½Úµã½øÐÐÔö¡¢É¾¡¢¸Ä¡¢²é

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml;
namespace WebApplication2
{
    /// <summary>
    /// XMLHelper XMLÎĵµ²Ù×÷¹ÜÀíÆ÷
    /// </summary>
    public class XMLHelper
    {
        public XMLHelper()
        {
            //
            // TODO: ÔÚ´Ë´¦Ìí¼Ó¹¹Ô캯ÊýÂß¼­
            //
        }
        #region XMLÎĵµ½Úµã²éѯºÍ¶ÁÈ¡
        /// <summary>
        /// Ñ¡ÔñÆ¥ÅäXPath±í´ïʽµÄµÚÒ»¸ö½ÚµãXmlNode.
        /// </summary>
        /// <param name="xmlFileName">XMLÎĵµÍêÈ«ÎļþÃû(°üº¬ÎïÀí·¾¶)</param>
        /// <param name="xpath">ҪƥÅäµÄXPath±í´ïʽ(ÀýÈç:"//½ÚµãÃû//×Ó½ÚµãÃû")</param>
        /// <returns>·µ»ØXmlNode</returns>
        public static XmlNode GetXmlNodeByXpath(string xmlFileName, string xpath)
        {
            XmlDocument xmlDoc = new XmlDocument();
            try