protected override void OnOrientationChanged(OrientationChangedEventArgs e)
{
if ((e.Orientation & PageOrientation.Portrait) != 0)
{
//NavigationService.Navigate(new Uri("/View/ChartView.xaml", UriKind.Relative));
VisualStateManager.GoToState(this, "PortraitVisualState", true);
}
else
{
VisualStateManager.GoToState(this, "LandscapeVisualState", true);
MainChart.Activate();
}
base.OnOrientationChanged(e);
}