public ActionResult Index(GalleryForSlideshow galleryForSlideshow)
        {
            if (ModelState.IsValid)
            {
                Gallery gallery = galleriesRepository.Galleries.Find(galleryForSlideshow.SelectedId);

                FolderResolver folderResolver = new FolderResolver(gallery.Path);

                Slideshow slideshow = new Slideshow();
                slideshow.SetImagesForSlideshow(folderResolver.ImagesDirectory);

                return(RedirectToAction("Index", "Manager"));
            }

            return(View("Index"));
        }