private static void PropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
VideoNavigator slider = (VideoNavigator)d;
if (e.Property == VideoNavigator.CurrentValueProperty)
{
}
}
private static void MarkerPositionsValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
VideoNavigator slider = (VideoNavigator)d;
slider.SetMarkerPositions();
}