public ActionResult Create(GenreModel genre)
 {
     try
     {
         if (ModelState.IsValid && service.GetAllGenres().All(e => e.Name != genre.Name))
         {
             service.AddGenre(genre.ToServiceGenre());
             if (Request.IsAjaxRequest())
             {
                 return(PartialView("_GenreTreeView", Genre.GetGenreIndexModel()));
             }
             return(RedirectToAction("Index"));
         }
         if (Request.IsAjaxRequest())
         {
             return(PartialView("_GenreTreeView", Genre.GetGenreIndexModel()));
         }
         return(RedirectToAction("Index"));
     }
     catch (Exception ex)
     {
         logger.Error(ex);
         return(View("Error"));
     }
 }