public IActionResult Index(string path)
        {
            var viewModel = new SpecificEBookViewModel
            {
                Path = path
            };

            return(View(viewModel));
        }
        public PhysicalFileResult GetBook(SpecificEBookViewModel eBookViewModel)
        {
            var fileToReturn = new PhysicalFileResult(eBookViewModel.Path, "application/text")
            {
                FileDownloadName = eBookViewModel.Title
            };

            return(fileToReturn);
        }