public MainPage()
{
//initialize the viewModel.
this.InitializeComponent();
viewModel = RealViewModel.GetViewModel();
this.DataContext = viewModel;
//add one instance of the info box
info = new InfoBox();
bingMap.Children.Add(info);
info.Visibility = Visibility.Collapsed;
//set default view location
bingMap.SetView(new Location(40.7451934814453,-73.9048461914063), 11.0f);
}