C#获取MP3文件的播放时间，浏览到指定的一个MP3文件，立即获取到这个MP3文件的播放时长，暂无其它更高深的功能，新手参考-C# a long time to get playing time of MP3 files, browse to the the specified MP3 files, and immediately get to this MP3 file playback, no other more advanced features, novice reference