简单实现自定义配置节1

       在程序中经常要使用自定义配置节来存储一些信息，下面是一个只读简单实现：

using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;

namespace SmsWinForm
{

    public class SectionHandler : System.Configuration.IConfigurationSectionHandler
    {
        public object Create(object parent, object configContext, System.Xml.XmlNode section)
        {
            return new Config(section);
        }
    }

    class Config
    {
        private System.Xml.XmlNode m_section;

        public Config(System.Xml.XmlNode node)
        {
            m_section = node;
        }

        static private Config configSection
        {
            get
            {
                Config config = (Config)System.Configuration.ConfigurationManager.GetSection("SmsWinForm");
                if (config == null)
                {
                    throw new ApplicationException("Failed to get configuration from App.config.");
                }
                return config;
            }
        }

        public string this[string key]
        {
            get
            {
                System.Xml.XmlNode node = m_section.SelectSingleNode(key);
                if (node != null)
                    return node.InnerText;
                else
                    return null;
            }
        }

        static public string BoardID
        {
            get
            {
                return configSection["boardid"];
            }
        }

        static public string CategoryID
        {
            get
            {
                return configSection["categoryid"];
            }
        }

    }
}

App.config中

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="SmsWinForm" type="SmsWinForm.SectionHandler,ConsoleTest1"/>
  </configSections>
  <SmsWinForm>
    <categoryid>CMPP</categoryid>
    <boardid>32</boardid>
  </SmsWinForm>
</configuration>

         private static void TestSimpleConfigdata()
         {
            Console.WriteLine(SmsWinForm.Config.CategoryID);
            Console.Read();
         }

Tip:如果只是用于只读情况下，那这个方法足够了，并且大部分情况我们很少更新配置节。

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