//新增点播记录
 private void PlayRecorder(PlayRecord playRecord)
 {
     playRecord.PlayDate = DateTime.Now;
     if (HttpContext.Request.IsAuthenticated)
     {
         playRecord.UserID = new Guid(Membership.GetUser().ProviderUserKey.ToString());
     }
     db.PlayRecords.Add(playRecord);
     db.SaveChanges();
 }
 //调用播放器
 public ActionResult Player(int id,int orderNum=1)
 {
     Player play = new Player() { VideoID=id,OrderNum=orderNum};
     play.VideoName= db.Videos.Find(id).Name;
     var url = db.VideoUrls
         .OrderBy(f => f.VideoOrder)
         .Where(f => f.VideoID == id && f.VideoOrder >= orderNum)
         .Take(1).ToList();
     if (url.Count >= 1)
     {
         //获取需要播放的url
         play.Url = url[0].VideoURL;
         var playRecord = new PlayRecord
         {
             VideoPartID=url[0].VideoPartID,
             VideoID=id,
         };
         PlayRecorder(playRecord);
     }
     play.OrderNum = orderNum;
     //用于生成下条url的播放地址
     //play.NextUrl = Url.Action("Player", "Video", new { id = id, orderNum = orderNum + 1 });
     ViewBag.Player = db.Sysconfigs.FirstOrDefault().Player;
     return View(play);
 }