<?xml version="1.0" encoding="utf-8" ?> <configuration>   <configSections>     <sectionGroup name="module">       <section name="appSettings" type="System.Configuration.NameValueFileSectionHandler"/>     </sectionGroup>   </configSections>   <module>     <appSettings>       <!--谷歌地图-->       <add key="Googlemap" value="1"/>       <!--箱实时状态信息汇总-->       <add key="Cab_rt" value="1"/>     </appSettings>   </module> </configuration>

using System; using System.Collections.Specialized; using System.Configuration; namespace ConsoleApplication38 {     class Program     {         static void Main(string[] args)         {             try             {                 SectionToolV2 _sectionHelper = new SectionToolV2("module/appSettings");                 Console.WriteLine(_sectionHelper.GetValue("Googlemap"));                 Console.WriteLine(_sectionHelper.ContainKey("YanZhiwei"));             }             catch (Exception ex)             {                 Console.WriteLine(ex.Message);             }             finally             {                 Console.ReadLine();             }         }     }     class SectionToolV2     {         NameValueCollection ModulSettings = null;         /// <summary>         ///构造函数         /// </summary>         /// <param name="sectionName">section名称</param>         public SectionToolV2(string sectionName)         {             ModulSettings = ConfigurationManager.GetSection(sectionName) as NameValueCollection;         }         /// <summary>         /// 是否包含该Section         /// </summary>         /// <returns></returns>         public bool ContainSection()         {             return !(ModulSettings == null);         }         /// <summary>         /// Section是否包含Key         /// </summary>         /// <param name="key">键</param>         /// <returns>值</returns>         public bool ContainKey(string key)         {             if (ContainSection())             {                 return !(ModulSettings[key] == null);             }             return false;         }         /// <summary>         /// 根据键获取值         /// </summary>         /// <param name="Key">键</param>         /// <returns>当不存在键的时候，返回string.Empty</returns>         public string GetValue(string Key)         {             string _value = string.Empty;             if (ContainKey(Key))             {                 _value = ModulSettings[Key];             }             return _value;         }     } }