title: Windows phone WebClient
body: <p>I am use WebClient to get page from web, 
  when i get google start page all ok
  but when i get page from vk api WebClient return Serer not found, but browser open this page normal
  my code:</p>
  
  <pre><code>private void log_Click(object sender, RoutedEventArgs e)
  {
      string auth;
      string login = Uri.EscapeUriString(this.login.Text);
      string password = Uri.EscapeUriString(this.pass.Password);
      auth = "https://api.vk.com/oauth/token";
      auth += "?grant_type=password" + "&amp;client_id=id&amp;client_secret=code&amp;username=" + login + "&amp;password=" + password + "&amp;scope=notify,friends,messages";
  
      //auth = "https://google.com/";
  
      WebClient client = new WebClient();
      client.DownloadStringCompleted +=new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
      Uri.EscapeUriString(auth);
      client.DownloadStringAsync(new Uri(auth));
  }
  void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
  {
      if (e.Error == null)
           MessageBox.Show("Using WebClient: " + e.Result);
  
      else
          MessageBox.Show(e.Error.Message);
  }
  </code></pre>