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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
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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
//µ¼ÈëʹÓÃxmlÓ¦ÓÃËùÐèµ ......
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private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
this.comboBox2.Items.Clear();
switch(this.comboBox1.SelectedIndex)
  ......
ÒÑÖªÓÐÒ»¸öXMLÎļþ£¨bookstore.xml£©ÈçÏ£º
<?xml version="1.0" encoding="gb2312"?>
<bookstore>
<book genre="fantasy" ISBN="2-3631-4">
&n ......