private static void DetachOldDataSourceCollectionChangedListener(SerialChart chart, object dataSource)
{
if (dataSource != null && dataSource is INotifyCollectionChanged)
{
(dataSource as INotifyCollectionChanged).CollectionChanged -= chart.OnDataSourceCollectionChanged;
}
}
private static void AttachDataSourceCollectionChangedListener(SerialChart chart, object dataSource)
{
if (dataSource != null && dataSource is INotifyCollectionChanged)
{
(dataSource as INotifyCollectionChanged).CollectionChanged += new NotifyCollectionChangedEventHandler(chart.OnDataSourceCollectionChanged);
}
}
private static void OnDataSourcePropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
SerialChart chart = d as SerialChart;
DetachOldDataSourceCollectionChangedListener(chart, e.OldValue);
AttachDataSourceCollectionChangedListener(chart, e.NewValue);
chart.ProcessData();
}