C# 操作config配置文件信息

以下是读取配置文件信息方法 引用程序集System.Configuration

    public class config
    {
        public static string Token = "";
        public static string user = GetAppConfig("User");




        //指定config文件读取
        private static string file = GetFilePath();
        private static string GetFilePath()
        {
            return System.Windows.Forms.Application.ExecutablePath;
        }

        ///<summary> 
        ///返回*.exe.config文件中appSettings配置节的value项  
        ///</summary> 
        ///<param name="strKey"></param> 
        ///<returns></returns> 
        public static string GetAppConfig(string strKey)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            return config.AppSettings.Settings[strKey].Value;
        }

        /// <summary>
        /// 依据连接串名字connectionName返回数据连接字符串  
        /// </summary>
        /// <param name="connectionName"></param>
        /// <returns></returns>
        public static string GetConnectionStringsConfig(string connectionName)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            return config.ConnectionStrings.ConnectionStrings[connectionName].ConnectionString.ToString();
        }


        ///<summary>  
        ///在*.exe.config文件中appSettings配置节增加一对键值对  
        ///</summary>  
        ///<param name="newKey"></param>  
        ///<param name="newValue"></param>  
        public static void UpdateAppConfig(string newKey, string newValue)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            bool exist = false;
            foreach (string key in config.AppSettings.Settings.AllKeys)
            {
                if (key == newKey)
                {
                    exist = true;
                }
            }
            if (exist)
            {
                config.AppSettings.Settings.Remove(newKey);
            }
            config.AppSettings.Settings.Add(newKey, newValue);
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings");
        }


        ///<summary> 
        ///更新连接字符串  
        ///</summary> 
        ///<param name="newName">连接字符串名称</param> 
        ///<param name="newConString">连接字符串内容</param> 
        ///<param name="newProviderName">数据提供程序名称</param> 
        public static void UpdateConnectionStringsConfig(string newName, string newConString, string newProviderName)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);

            bool exist = false; //记录该连接串是否已经存在  
            //如果要更改的连接串已经存在  
            if (config.ConnectionStrings.ConnectionStrings[newName] != null)
            {
                exist = true;
            }
            // 如果连接串已存在，首先删除它  
            if (exist)
            {
                config.ConnectionStrings.ConnectionStrings.Remove(newName);
            }
            //新建一个连接字符串实例  
            ConnectionStringSettings mySettings =
                new ConnectionStringSettings(newName, newConString, newProviderName);
            // 将新的连接串添加到配置文件中.  
            config.ConnectionStrings.ConnectionStrings.Add(mySettings);
            // 保存对配置文件所作的更改  
            config.Save(ConfigurationSaveMode.Modified);
            // 强制重新载入配置文件的ConnectionStrings配置节  
            ConfigurationManager.RefreshSection("connectionStrings");
        }


        /// <summary>
        /// 修改system.serviceModel下所有服务终结点的IP地址
        /// 只改ip 不改端口
        /// </summary>
        /// <param name="serverIP">127.0.0.1</param>
        public static void UpdateServiceModelConfig(string serverIP)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            ConfigurationSectionGroup sec = config.SectionGroups["system.serviceModel"];
            ServiceModelSectionGroup serviceModelSectionGroup = sec as ServiceModelSectionGroup;
            ClientSection clientSection = serviceModelSectionGroup.Client;
            foreach (ChannelEndpointElement item in clientSection.Endpoints)
            {
                string pattern = @"d{1,3}.d{1,3}.d{1,3}.d{1,3}";
                string address = item.Address.ToString();
                string replacement = string.Format("{0}", serverIP);
                address = Regex.Replace(address, pattern, replacement);
                item.Address = new Uri(address);
            }

            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("system.serviceModel");
        }



        /// <summary>
        /// 加密 
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void Encryption()
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            ConfigurationSection section = config.GetSection("connectionStrings");
            if (section != null && !section.SectionInformation.IsProtected)
            {
                //section.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
                section.SectionInformation.ProtectSection("RSAProtectedConfigurationProvider");
                config.Save();
            }

            ConfigurationSection section1 = config.GetSection("appSettings");
            if (section1 != null && !section1.SectionInformation.IsProtected)
            {
                // section1.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
                section1.SectionInformation.ProtectSection("RSAProtectedConfigurationProvider");
                config.Save();
            }

        }

        /// <summary>
        /// 解密 
        /// </summary>
        public static void Decrypt()
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(file);
            ConfigurationSection section = config.GetSection("connectionStrings");
            if (section != null && section.SectionInformation.IsProtected)
            {
                section.SectionInformation.UnprotectSection();
                config.Save();
            }
            ConfigurationSection section1 = config.GetSection("appSettings");
            if (section1 != null && section1.SectionInformation.IsProtected)
            {
                section1.SectionInformation.UnprotectSection();
                config.Save();
            }
        }



    }

 

获得当前起作用的配置文件

AppDomain.CurrentDomain.SetupInformation.ConfigurationFile