适用于app.config与web.config的ConfigUtil读写工具类

之前文章：《两种读写配置文件的方案(app.config与web.config通用)》，现在重新整理一个更完善的版本，增加批量读写以及指定配置文件路径，代码如下：

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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Configuration; using System.IO;   namespace Zuowj.Utils {     /// <summary>     /// 配置工具类     /// Author：左文俊     /// Date：2018/1/27     public static class ConfigUtil     {         /// <summary>         /// 获取管理配置文件对象Configuration         /// </summary>         /// <param name="configPath">指定要管理的配置文件路径，如果为空或不存在，则管理程序集默认的配置文件路径</param>         /// <returns></returns>         private static Configuration GetConfiguration(string configPath = null)         {             if (!string.IsNullOrEmpty(configPath) && File.Exists(configPath))             {                 ExeConfigurationFileMap map = new ExeConfigurationFileMap();                 map.ExeConfigFilename = configPath;                 return ConfigurationManager.OpenMappedExeConfiguration(map, ConfigurationUserLevel.None);             }             else             {                 return ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);             }         }             /// <summary>         /// 获取指定配置文件+配置名称的配置项的值         /// </summary>         public static string GetAppSettingValue(string key, string defaultValue = null, string configPath = null)         {             var config = GetConfiguration(configPath);             var appSetting = config.AppSettings.Settings[key];             return appSetting.Value;         }             /// <summary>         /// 设置配置值（存在则更新，不存在则新增）         /// </summary>         public static void SetAppSettingValue(string key, string value, string configPath = null)         {             var config = GetConfiguration(configPath);             var setting = config.AppSettings.Settings[key];             if (setting == null)             {                 config.AppSettings.Settings.Add(key, value);             }             else             {                 setting.Value = value;             }               config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("appSettings");         }           /// <summary>         /// 删除配置值         /// </summary>         public static void RemoveAppSetting(string key, string configPath = null)         {             var config = GetConfiguration(configPath);             config.AppSettings.Settings.Remove(key);             config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("appSettings");         }           /// <summary>         /// 设置多个配置值（存在则更新，不存在则新增）         /// </summary>         public static void SetAppSettingValues(IEnumerable<KeyValuePair<string, string>> settingValues, string configPath = null)         {             var config = GetConfiguration(configPath);             foreach (var item in settingValues)             {                 var setting = config.AppSettings.Settings[item.Key];                 if (setting == null)                 {                     config.AppSettings.Settings.Add(item.Key, item.Value);                 }                 else                 {                     setting.Value = item.Value;                 }             }             config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("appSettings");         }           /// <summary>         /// 获取所有配置值         /// </summary>         public static Dictionary<string, string> GetAppSettingValues(string configPath = null)         {             Dictionary<string, string> settingDic = new Dictionary<string, string>();             var config = GetConfiguration(configPath);             var settings = config.AppSettings.Settings;             foreach (string key in settings.AllKeys)             {                 settingDic[key] = settings[key].ToString();             }             return settingDic;         }           /// <summary>         /// 删除多个配置值         /// </summary>         public static void RemoveAppSettings(string configPath = null, params string[] keys)         {             var config = GetConfiguration(configPath);             if (keys != null)             {                 foreach (string key in keys)                 {                     config.AppSettings.Settings.Remove(key);                 }             }             else             {                 config.AppSettings.Settings.Clear();             }             config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("appSettings");         }               /// <summary>         /// 获取连接字符串         /// </summary>         public static string GetConnectionString(string name, string defaultconnStr = null, string configPath = null)         {             var config = GetConfiguration(configPath);             var connStrSettings = config.ConnectionStrings.ConnectionStrings[name];             if (connStrSettings == null)             {                 return defaultconnStr;             }             return connStrSettings.ConnectionString;         }           /// <summary>         /// 获取指定配置文件+连接名称的连接字符串配置项         /// </summary>         public static ConnectionStringSettings GetConnectionStringSetting(string name, string configPath = null)         {             var config = GetConfiguration(configPath);             var connStrSettings = config.ConnectionStrings.ConnectionStrings[name];             return connStrSettings;         }           /// <summary>         /// 设置连接字符串的值（存在则更新，不存在则新增）         /// </summary>         public static void SetConnectionString(string name, string connstr, string provider, string configPath = null)         {             var config = GetConfiguration(configPath);             ConnectionStringSettings connStrSettings = config.ConnectionStrings.ConnectionStrings[name];             if (connStrSettings != null)             {                 connStrSettings.ConnectionString = connstr;                 connStrSettings.ProviderName = provider;             }             else             {                 connStrSettings = new ConnectionStringSettings(name, connstr, provider);                 config.ConnectionStrings.ConnectionStrings.Add(connStrSettings);             }               config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("connectionStrings");         }           /// <summary>         /// 删除连接字符串配置项         /// </summary>         public static void RemoveConnectionString(string name, string configPath = null)         {             var config = GetConfiguration(configPath);             config.ConnectionStrings.ConnectionStrings.Remove(name);             config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("connectionStrings");         }           /// <summary>         /// 获取所有的连接字符串配置项         /// </summary>         public static Dictionary<string, ConnectionStringSettings> GetConnectionStringSettings(string configPath = null)         {             var config = GetConfiguration(configPath);             var connStrSettingDic = new Dictionary<string, ConnectionStringSettings>();             var connStrSettings = ConfigurationManager.ConnectionStrings;             foreach (ConnectionStringSettings item in connStrSettings)             {                 connStrSettingDic[item.Name] = item;             }             return connStrSettingDic;         }           /// <summary>         /// 设置多个连接字符串的值（存在则更新，不存在则新增）         /// </summary>         public static void SetConnectionStrings(IEnumerable<ConnectionStringSettings> connStrSettings, string configPath = null)         {             var config = GetConfiguration(configPath);             foreach (var item in connStrSettings)             {                 ConnectionStringSettings connStrSetting = config.ConnectionStrings.ConnectionStrings[item.Name];                 if (connStrSetting != null)                 {                     connStrSetting.ConnectionString = item.ConnectionString;                     connStrSetting.ProviderName = item.ProviderName;                 }                 else                 {                     config.ConnectionStrings.ConnectionStrings.Add(item);                 }             }               config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("connectionStrings");         }           /// <summary>         /// 删除多个连接字符串配置项         /// </summary>         public static void RemoveConnectionStrings(string configPath = null, params string[] names)         {             var config = GetConfiguration(configPath);             if (names != null)             {                 foreach (string name in names)                 {                     config.ConnectionStrings.ConnectionStrings.Remove(name);                 }             }             else             {                 config.ConnectionStrings.ConnectionStrings.Clear();             }             config.Save(ConfigurationSaveMode.Modified);             ConfigurationManager.RefreshSection("connectionStrings");         }       }     }