private static void OnDataSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PieChart chart = d as PieChart;
DetachOldDataSourceCollectionChangedListener(chart, e.OldValue);
AttachDataSourceCollectionChangedListener(chart, e.NewValue);
chart.ProcessData();
}
private static void OnMemberPathPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PieChart chart = d as PieChart;
if (chart != null)
{
chart.ProcessData();
}
}