| protected OnSourceChanged ( object oldSource, object newSource ) : void | ||
| oldSource | object | |
| newSource | object | |
| return | void | |
protected virtual void OnSourceChanged (object oldSource, object newSource)
{
if (newSource == null) {
View = null;
} else {
ICollectionViewFactory factory = newSource as ICollectionViewFactory;
if (factory != null) {
View = factory.CreateView ();
} else {
ICollectionView view = null;
if (CachedViews.TryGetValue (newSource, out view)) {
View = view;
} else {
view = CollectionView.Create ((IEnumerable) newSource);
CachedViews.Add (newSource, view);
View = view;
}
}
}
Refresh ();
}
/// <summary>
/// Called when SourceProperty is invalidated on "d."
/// </summary>
/// <param name="d">The object on which the property was invalidated.</param>
/// <param name="e">Argument.</param>
private static void OnSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
CollectionViewSource ctrl = (CollectionViewSource)d;
ctrl.OnSourceChanged(e.OldValue, e.NewValue);
ctrl.EnsureView();
}