public AppConfig(string filename) { System.Configuration.ExeConfigurationFileMap _cfgMap = new System.Configuration.ExeConfigurationFileMap(); _cfgMap.ExeConfigFilename = filename; _config = System.Configuration.ConfigurationManager.OpenMappedExeConfiguration (_cfgMap, System.Configuration.ConfigurationUserLevel.None); _app_settings = new config.Internals.AppSettingsClass(ref _config); }