public async Task <IActionResult> Insert(SlideShowInsertViewModel model)
        {
            TempData.AddResult(await _slideShowRepository.AddAsync(model));

            return(RedirectToAction("Index"));
        }
        public async Task <IActionResult> Insert(SlideShowInsertViewModel model)
        {
            TempData.AddResult(await _slideShowRepository.AddAsync(model));

            return(Redirect(IndexUrlWithQueryString));
        }