public static Orientation GetItemsPanelOrientation(this ItemsControl itemsControl)
{
var itemsPresenter = itemsControl.GetVisualDescendant <ItemsPresenter>();
if (itemsPresenter == null)
{
return(Orientation.Vertical);
}
var itemsPanel = VisualTreeHelper.GetChild(itemsPresenter, 0);
if (itemsPanel == null)
{
return(Orientation.Vertical);
}
var orientationProperty = LateBinder.FindProperty(itemsPanel.GetType(), "Orientation");
if (orientationProperty == null)
{
return(Orientation.Vertical);
}
return((Orientation)orientationProperty.GetValue(itemsPanel));
}