问题 I am developing a web site where people can access audio and video files. I have the code for downloading the files, which consists of two action methods as follows... public ActionResult GetAudioFile(int id) { return GetFile(id, true); } public ActionResult GetVideoFile(int id) { return GetFile(id, false); } private ActionResult GetFile(int id, bool isAudio) { // Code to get info about the file, etc omitted for clarity string downloadFileName = // full path to audio/video file byte[] bytes =