[c#] async-await example from video http://www.asp.net/vnext/overview/videos/async-and-await

gistfile1.cs

public async Task<ActionResult> Index() {
  var contacts = Client.DownloadStringTaskAsync("api/contacts");
  var temperature = Client.DownloadStringTaskAsync("api/temperature");
  var location = Client.DownloadStringTaskAsync("api/location");
  
  await Task.WhenAll(contacts, temperature, location);
  
  ViewBag.Temperature = temperature.Result;
  ViewBag.Location = location.Result;
  ViewBag.Contacts = contacts.Result;
  
  return View();
}