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
1<configuration>
2<configsections>
3<section name="xinyulou" type="Config.ConfigurationHandler, Config"></section>
4</configsections>
5<xinyulou>
6<add name="Region" value="心雨楼"></add>
7</xinyulou>
8<system.web>
9<compilation debug="true" defaultlanguage="c#"></compilation>
10<customerrors mode="RemoteOnly"></customerrors>
11<authentication mode="Windows"></authentication>
12<authorization>
13<allow users="*"></allow> <!-- <sectionGroup name="xinyulou"> 允许所有用户 -->
14</authorization>
15<trace enabled="false" localonly="true" pageoutput="false" requestlimit="10" tracemode="SortByTime"></trace>
16<sessionstate cookieless="false" mode="InProc" sqlconnectionstring="data source=127.0.0.1;Trusted_Connection=yes" stateconnectionstring="tcpip=127.0.0.1:42424" timeout="20"></sessionstate>
17<globalization requestencoding="utf-8" responseencoding="utf-8"></globalization>
18</system.web>
19</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;
}
}
}
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！