public async Task <ActionResult> IndexAsync()
{
Stopwatch watch = new Stopwatch();
watch.Start();
ContentManagement service = new ContentManagement();
var contentTask = service.GetContentAsync();
var numberTask = service.GetNumbreAsync();
await contentTask;
await numberTask;
watch.Stop();
ViewBag.Milliseconds = watch.ElapsedMilliseconds;
return(View());
}