Programmatically Scroll Silverlight ListBox

I tried using the following method, but it doesn't seem to work on databound listbox.

 mylistbox.ScrollIntoView(mylistbox.Items[mylistbox.Items.Count - 1])

I also tried to grab the IScrollProvider with no success:

var lbItemAutomation = (ListBoxAutomationPeer)ListBoxAutomationPeer.CreatePeerForElement(mylistbox);
var listBoxScroller = (IScrollProvider)lbItemAutomation.GetPattern(PatternInterface.Scroll);  <-- returns null value

Thanks, Ricky

UPDATE 4/1: After retried, I confirm the first method works. How开发者_开发知识库ever, It will be nice the get the second method works since you can scroll by percentage through this method. So any help will be appreciated.

Works fine by me:

<StackPanel Orientation="Horizontal">

    <ListBox x:Name="_lbx" ItemsSource="{Binding SimpleItems}" Height="100"/>
    <Button Content="Scroll" Click="DoScroll" />
</StackPanel>

Code-behind:

in constructor:

SimpleItems = new List<string>{ "hello", "world", "the world", "is coming", "to an end", "in 2012", "or maybe", "sometime", "in the future"};

DataContext = this;

Then:

public List<string> SimpleItems { get; set; }


private void DoScroll(object sender, RoutedEventArgs e) {

    _lbx.ScrollIntoView(_lbx.Items[_lbx.Items.Count - 1]);
}

Could you post your related XAML and code-behind ?