public async Task <IActionResult> DownloadFile(string fileToDownload)
        {
            var result = await _fileManagerService.GetInfoForDownload(fileToDownload);

            if (result == null || string.IsNullOrEmpty(result.FileSystemPath))
            {
                return(NotFound());
            }


            if (result.MimeType == "application/pdf")
            {
                return(File(new FileStream(result.FileSystemPath, FileMode.Open), result.MimeType)); //inline
            }

            //Response.Headers.Add("Content-Disposition", "attachment; filename=" + result.FileName);
            //Response.Headers.Add("X-Content-Type-Options", "nosniff");

            return(File(new FileStream(result.FileSystemPath, FileMode.Open), result.MimeType, result.FileName));
        }