可通过 IDictionary IDic = (IDictionary)ConfigurationManager.GetSection(setionGroupName+"/"+setionName) 读取配置，以键值对的方式保存。若需要修改，可采用xPath方式直接访问。下面这个AppConfigManagement静态类，当中的修改方法都是同时更新保存两个配置文件的，原因注释里有写到。

/// <summary>    /// winform会自动生成有2个配置文件 vshost.exe.config 和  exe.config，  修改操作必须同时修改2个文件并同时保存， 如果只修改vshost.exe.config，程序重启会重新读取exe.config将其覆盖    /// </summary>    public static class AppConfigManagement        private static Configuration appConfig = null;   // vshost.exe.config        private static Configuration appConfig_original = null;   // exe.config        private static XmlDocument doc = null;       //加载 vshost.exe.config        static AppConfigManagement()            appConfig = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);   //打开 vshost.exe.config            appConfig_original = ConfigurationManager.OpenExeConfiguration(Assembly.GetEntryAssembly().Location);   //打开 exe.config            doc = new XmlDocument();       //加载 vshost.exe.config            doc.Load(appConfig.FilePath);        //读取连接字符串        public static string GetConnectionStringSet(string name)                return ConfigurationManager.ConnectionStrings[name].ToString();            }catch(Exception err){                throw new Exception("GetConnectionStringSet:" + err.Message);        //修改连接字符串        public static void SetConnectionStringSet(string name,string value)                appConfig.ConnectionStrings.ConnectionStrings.Remove(name);                 //没有直接修改的方法，只能先删除，再创建     vshost.exe.config                appConfig_original.ConnectionStrings.ConnectionStrings.Remove(name);        //     .exe.config                appConfig.ConnectionStrings.ConnectionStrings.Add(new ConnectionStringSettings(name, value));         //添加vshost.exe.config                appConfig_original.ConnectionStrings.ConnectionStrings.Add(new ConnectionStringSettings(name, value));         //添加exe.config                appConfig.Save();                     //保存vshost.exe.config                appConfig_original.Save();                     //保存exe.config                ConfigurationManager.RefreshSection("connectionStrings");   //刷新内存中的配置值                if (!(GetConnectionStringSet(name) == value))                {             //读取比较确认修改成功                    throw new Exception("Failed to SetConnectionStringSet");            catch (Exception err)                throw new Exception("SetConnectionStringSet:" + err.Message);        //读取程序配置        public static string GetAppSeting(string name)                return ConfigurationManager.AppSettings[name].ToString();            catch (Exception err)                throw new Exception("GetAppSeting:" + err.Message);        //添加程序配置        public static void AddAppSeting(string key,string value)                appConfig.AppSettings.Settings.Add(key, value);                appConfig_original.AppSettings.Settings.Add(key, value);                appConfig.Save();                     //保存                appConfig_original.Save();                     //保存                ConfigurationManager.RefreshSection("appSettings");                if (!(GetAppSeting(key) == value))                {             //读取比较确认添加成功                    throw new Exception("Failed to AddAppSeting");            catch (Exception err)                throw new Exception("AddAppSeting:" + err.Message);        //删除程序配置        public static void DeleteAppSeting(string key)                appConfig.AppSettings.Settings.Remove(key);                appConfig_original.AppSettings.Settings.Remove(key);                appConfig.Save();                     //保存                appConfig_original.Save();                     //保存                ConfigurationManager.RefreshSection("appSettings");            catch (Exception err)                throw new Exception("DeleteAppSeting:" + err.Message);        //修改程序配置        public static void UpdateAppSeting(string key,string value)                appConfig.AppSettings.Settings[key].Value = value;                appConfig_original.AppSettings.Settings[key].Value = value;                appConfig.Save();                     //保存                appConfig_original.Save();                     //保存                ConfigurationManager.RefreshSection("appSettings");                if (!(GetAppSeting(key) == value))                {             //读取比较确认添加成功                    throw new Exception("Failed to UpdateAppSeting");            catch (Exception err)                throw new Exception("UpdateAppSeting:" + err.Message);        //读取自定义配置节        //读取System.Configuration.SingleTagSectionHandler类型,System.Configuration.NameValueSectionHandler类型和System.Configuration.DictionarySectionHandler类型自定义配置节        public static Dictionary<string, string> GetCustomizedSection(string setionName)                IDictionary IDic = (IDictionary)ConfigurationManager.GetSection(setionName);                Dictionary<string,string> Dic_Copy = new Dictionary<string,string>();                           foreach(object key in IDic.Keys){                    Dic_Copy.Add(key.ToString(),IDic[key].ToString());                return Dic_Copy;            catch (Exception err)                throw new Exception("GetCustomizedSection:" + err.Message);        //读取分组的System.Configuration.SingleTagSectionHandler类型,System.Configuration.NameValueSectionHandler类型和System.Configuration.DictionarySectionHandler类型自定义配置节        public static Dictionary<string, string> GetCustomizedSection(string setionGroupName,string setionName)                IDictionary IDic = (IDictionary)ConfigurationManager.GetSection(setionGroupName+"/"+setionName);                Dictionary<string, string> Dic_Copy = new Dictionary<string, string>();                foreach (object key in IDic.Keys)                    Dic_Copy.Add(key.ToString(), IDic[key].ToString());                return Dic_Copy;            catch (Exception err)                throw new Exception("GetCustomizedSection:" + err.Message);        //修改System.Configuration.SingleTagSectionHandler类型自定义配置节        public static void SetCustomizedSectionProperty(string setionGroup,string setionName, string propertyName, string value)                string xpath = "";                if (string.IsNullOrEmpty(setionGroup))      //是否有组                    xpath = setionName;                    xpath = setionGroup + "/" + setionName;                XmlNode node = doc.SelectSingleNode(@"/configuration/"+xpath);    //使用xPath的方式直接访问                node.Attributes[propertyName].Value = value;     //设置属性值                doc.Save(appConfig.FilePath);                    //保存至 vshost.exe.config                doc.Save(appConfig_original.FilePath);                    //保存至 exe.config                ConfigurationManager.RefreshSection(xpath);      //刷新内存中的配置值            catch (Exception err)                throw new Exception("SetSingleTagSectionValue:" + err.Message); 本文作者：阿辉 信息来源： 公众号 Andy阿辉 所属分类： C#

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