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SearchEngine.cs


using   System;
using   System.Configuration;

///   <summary>
///   Summary   description   for   SearchEngine
///   </summary>
public   class   SearchEngine   :   ConfigurationElement
{
        // <configSections>
        // <!--   Configuration   section-handler   declaration   area.   -->
        // <sectionGroup   name= "ddnTest ">
          //   <section   name= "searchEngines "   type= "SearchEnginesSection "   />
        // </sectionGroup>
        // <!--   Other   <section>   and   <sectionGroup>   elements.   -->        
        // </configSections>  
        // <ddnTest>
        // <searchEngines   defaultEngine= "baidu "   defaultEngineUrl= "http://www.baidu.com "   >
        //     <engine   name= "baidu "   url= "http://www.baidu.com "   />


        //   Fields
        private   static   ConfigurationPropertyCollection   _properties   =   new   ConfigurationPropertyCollection();
        private   static   readonly   ConfigurationProperty   _propName   =   new   ConfigurationProperty( "name ",   typeof(string),   " ",   ConfigurationPropertyOptions.IsKey   |   ConfigurationPropertyOptions.IsRequired);
        private   static   readonly   ConfigurationProperty   _propUrl   =   new   ConfigurationProperty( "url ",   typeof(string),   " ",   ConfigurationPropertyOptions.IsRequired);

        //   Methods
        static   SearchEngine()
        {
                _properties.Add(_propName);
                _properties.Add(_propUrl);
        }

        public   SearchEngine()
        {
        }
       
        public   SearchEngine(string   name,   string   url)   :   this()
        {
                this.Name   =   name;
                this.Url   =   url;
        }

        public   override   bool   Equals(object   searchEngine)
        {
                SearchEngine   engine   =   searchEngine   as   SearchEngine;
                if   ((engine   !=   null)   &&   (engine.Name   ==   this