public JsonResult LfGroup(long roomRegId, long[] addRoomRegIds)
        {
            var apiResult = new APIResult();
            var user      = UserContext.CurrentUser;

            try
            {
                RoomRegBll.LfGroup(roomRegId, addRoomRegIds);
            }
            catch (Exception ex)
            {
                apiResult.Ret = -1;
                apiResult.Msg = ex.Message;
            }

            return(Json(apiResult));
        }