A sample CS code for VisualState

VisualStateSample.cs

private void Page_Loaded(object sender, RoutedEventArgs e)
{
    InitializeVisualStates();
}

private void InitializeVisualStates()
{
    var groups = VisualStateManager.GetVisualStateGroups(LayoutRoot);
    groups[0].CurrentStateChanged += (sender, e) =>
    {
        Debug.WriteLine("Width state changed: " + e.OldState.Name + " -> " + e.NewState.Name);
    };
    groups[1].CurrentStateChanged += (sender, e) =>
    {
        Debug.WriteLine("Height state changed: " + e.OldState.Name + " -> " + e.NewState.Name);
    };
}