C# 读取config文件

        static void Main(string[] args)

        {           

//读取当前exe的config：App.config

//读取appSettings节点里的数据

            NameValueCollection nameValues = ConfigurationManager.AppSettings;
            string ssssss = nameValues["Key"];

//读取当前exe的config：App.config

        //使用exe路径

            Configuration configuration = ConfigurationManager.OpenExeConfiguration(Assembly.GetEntryAssembly().Location);
            AppSettingsSection ass = configuration.AppSettings;
            string sss = ass.Settings["Key"].Value;

       //读取configSections里的数据
            ConfigurationSectionGroup group = configuration.GetSectionGroup("Group");

            AppSettingsSection group1 = (AppSettingsSection)group.Sections.Get("Group1");

            string str = group1.Settings["Key"].Value;

            Console.WriteLine(str);

//改变值

            group1.Settings["Key"].Value = "ChangedValue";

// 保存

            configuration.Save();

//读取dll的config文件：TestDll.dll.config

            Type tp = typeof(Class1);
            Configuration config = ConfigurationManager.OpenExeConfiguration(tp.Assembly.Location);
            ConfigurationSectionGroup _group = config.GetSectionGroup("Group");
            AppSettingsSection appss = (AppSettingsSection)_group.Sections.Get("SubGroup");
            Console.WriteLine(appss.Settings["TestKey"].Value);

            Console.ReadLine();

        }

App.config文件：

 
 
   
     

     

   
 
 
   
     
   
   
     
   
 
 
 
   
 
 
   
 

TestDll.dll.config文件：