in TrafficApp/MainPage.xaml.cs [340:353]
private async void AddCurrentLocation_Click(object sender, RoutedEventArgs e)
{
(sender as Button).IsEnabled = false;
var currentLocation = await this.GetCurrentLocationAsync();
if (currentLocation != null)
{
// Resolve the address given the geocoordinates.
await LocationHelper.TryUpdateMissingLocationInfoAsync(currentLocation, currentLocation);
this.EditNewLocation(currentLocation);
}
(sender as Button).IsEnabled = true;
}