public IActionResult Upload(UploadForm form) { if (form.File is null) { return(RedirectToAction("Upload", new { id = form.Id })); } ; Speaker speaker = _speakerService.GetById(form.Id); byte[] audioFile = GetByteArray(form.File); _speechService.AddAudio(form.File.FileName, audioFile, speaker); return(RedirectToAction("View", "Speaker", new { Id = form.Id })); }