public IActionResult Get(string accessId, string id) { var filePath = _securedFilePathProvider.GetFileIdForUseOnceAccessId(accessId); if (!string.IsNullOrEmpty(filePath)) { var fileContents = System.IO.File.ReadAllBytes(filePath); return(new FileContentResult(fileContents, "application/octet-stream")); } return(new StatusCodeResult(401)); }