public async Task <ActionResult> FileUpload(HttpPostedFileBase file)
{
if (file == null)
{
return(RedirectToAction("Upload"));
}
var apiService = new FaceApiService(ConfigurationManager.AppSettings["FaceApiKey"]);
byte[] resultImage = await apiService.UploadAndDetectFace(file);
TempData["resultImageBase64"] = GetImageBase64String(resultImage);
return(RedirectToAction("ViewFaces"));
}