public static void OnAutoScrollToEndChanged(DependencyObject s, DependencyPropertyChangedEventArgs e)
{
var itemsControl = s as ItemsControl;
if (itemsControl != null)
{
var itemsControlItems = itemsControl.Items;
var data = itemsControlItems.SourceCollection as INotifyCollectionChanged;
var scrollToEndHandler = new NotifyCollectionChangedEventHandler(
(s1, e1) =>
{
if (itemsControl.Items.Count > 0)
{
ExecuteOnUIThread.Invoke(() =>
{
ScrollViewer scrollViewer = VisualTree.GetDescendantByType <ScrollViewer>(itemsControl);
scrollViewer?.ScrollToEnd();
});
}
});
if (data != null)
{
if ((bool)e.NewValue)
{
data.CollectionChanged += scrollToEndHandler;
}
else
{
data.CollectionChanged -= scrollToEndHandler;
}
}
}
}
public static void OnAutoScrollToEndChanged(DependencyObject s, DependencyPropertyChangedEventArgs e)
{
var listBox = s as ListBox;
if (listBox != null)
{
var listBoxItems = listBox.Items;
var data = listBoxItems.SourceCollection as INotifyCollectionChanged;
var scrollToEndHandler = new NotifyCollectionChangedEventHandler(
(s1, e1) =>
{
if (listBox.Items.Count > 0)
{
//object lastItem = listBox.Items[listBox.Items.Count - 1];
//listBoxItems.MoveCurrentTo(lastItem);
//listBox.ScrollIntoView(lastItem);
ExecuteOnUIThread.Invoke(() =>
{
ScrollViewer scrollViewer = VisualTree.GetDescendantByType <ScrollViewer>(listBox);
scrollViewer?.ScrollToEnd();
});
}
});
if (data != null)
{
if ((bool)e.NewValue)
{
data.CollectionChanged += scrollToEndHandler;
}
else
{
data.CollectionChanged -= scrollToEndHandler;
}
}
}
}
