C#读取指定路径配置文件的方法

ExeConfigurationFileMapmap=newExeConfigurationFileMap();
           map.ExeConfigFilename=@"F:\App1.config";;
           Configurationconfig=ConfigurationManager.OpenMappedExeConfiguration(map,ConfigurationUserLevel.None);
           stringconnstr=config.ConnectionStrings.ConnectionStrings["connStr"].ConnectionString;
           MessageBox.Show(connstr);
           stringkey=config.AppSettings.Settings["key"].Value;
           MessageBox.Show(key);