configSections的作用很多！我就不多举了。

首先要注意的一点是！configSections关联的类型在一个进程内只实例化一次，

1、配置文件Web.config

<?xml version="1.0" encoding="utf-8" ?><configuration>  <configSections>   <section name="xinyulou" type="Config.ConfigurationHandler, Config" />  </configSections>  <xinyulou>    <add name="Region" value = "心雨楼" />  </xinyulou>    <system.web>    <compilation defaultLanguage="c#" debug="true" />  <customErrors mode="RemoteOnly" />  <authentication mode="Windows" />  <authorization>   <allow users="*" /> <!-- <sectionGroup name="xinyulou"> 允许所有用户 -->  </authorization>  <trace enabled="false" requestLimit="10" pageOutput="false" traceMode="SortByTime" localOnly="true" />  <sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"   cookieless="false" timeout="20" />  <globalization requestEncoding="utf-8" responseEncoding="utf-8" /> </system.web> </configuration>

2、两个重要的类

using System;using System.Configuration;using System.Collections;using System.Xml;

namespace Config{  public class Configuration {  private Hashtable m_MyRegionConfig = new Hashtable();  public Hashtable MyRegionConfig  {   get {return m_MyRegionConfig;}

  }  public static Configuration GetConfig()   {   return (Configuration) ConfigurationSettings.GetConfig("xinyulou");  }  internal void LoadValuesFromConfigurationXml(XmlNode node)   {      foreach (XmlNode child in node.ChildNodes)    {    m_MyRegionConfig.Add(child.Attributes["name"].Value,child.Attributes["value"].Value);      }

  }

 }  internal class ConfigurationHandler : IConfigurationSectionHandler  {

  public virtual object Create(Object parent, Object context, XmlNode node)   {   Configuration config = new Configuration();   config.LoadValuesFromConfigurationXml(node);   return config;  }[page]

 }}

3、示例在aspx中用！

private void Page_Load(object sender, System.EventArgs e)  {   Response.Write(Configuration.GetConfig().MyRegionConfig["Region"].ToString());  }

configSections的威力很强大。有很多种用法与应用！这里就不再举例了，有问题可与我联系。或在恢复中提出来！