１）App.config 

<?xml version="1.0" encoding="utf-8" ?>

<configuration>

  <configSections>

    <section name="color"   type="System.Configuration.NameValueSectionHandler" />

    <section name="message" type="System.Configuration.DictionarySectionHandler"/>

    <section name="name"   type="System.Configuration.SingleTagSectionHandler"/>

  </configSections>

  <color>

    <add key="red"   value="#ff0000"/>

    <add key="green" value="#00ff00"/>

    <add key="blue"  value="#0000ff"/>

  </color>

  <message>

    <add key="welcome" value="你好,欢迎"/>

  </message>

  <name firstName="陈" lastName="明明"/>

</configuration>

对于自定义的配置节，应该先在 <configSections>中声明要配置的节与类型，如着色部分，接着，在后面定义要配置的具体内容，正如定义一个变量。

 (2)配置节的访问

       public static void Main(string[] args)

        {

            //get color

            NameValueCollection color = (NameValueCollection)ConfigurationManager.GetSection("color");

            foreach (String str in color.AllKeys) {

                Console.WriteLine(str+":"+color[str]);

            }

            //get message

            IDictionary message = (IDictionary)ConfigurationManager.GetSection("message");

            foreach (String str in message.Keys) {

                Console.WriteLine(str+":"+message[str]);

            }

            // get name

            IDictionary name = (IDictionary)ConfigurationManager.GetSection("name");

            foreach (String str in name.Keys)

            {

                Console.WriteLine(str + ":" + name[str]);

            }   

            //Console.WriteLine(name["firstName"]);

            Console.Read();

        } 

 

转转 http://www.cnblogs.com/zengle_love/archive/2009/03/22/1419138.html