internal static void OnVirtualizationPropertyChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
ItemsControl ic = d as ItemsControl;
if (ic != null)
{
Panel p = ic.ItemsHost;
if (p != null)
{
p.InvalidateMeasure();
ItemsPresenter itemsPresenter = VisualTreeHelper.GetParent(p) as ItemsPresenter;
if (itemsPresenter != null)
{
itemsPresenter.InvalidateMeasure();
}
if (d is TreeView)
{
DependencyProperty dp = e.Property;
if (dp == VirtualizingStackPanel.IsVirtualizingProperty ||
dp == VirtualizingPanel.IsVirtualizingWhenGroupingProperty ||
dp == VirtualizingStackPanel.VirtualizationModeProperty ||
dp == VirtualizingPanel.ScrollUnitProperty)
{
VirtualizationPropertyChangePropagationRecursive(ic, p);
}
}
}
}
}
