How to Default Scroll Position in ScrollViewer/ListBox in WP7 - windows-phone-7

Question

I'm building a WP7 application using the Panorama control. I'm fairly new to WP7 so I might be missing something simple. My Panorama control is bound to ViewModel and PanoramaItems are added at runtime when a property of that ViewModel is populated with data via web service request. I'd like to have a section at the top of each PanoramaItem that holds a refresh button etc.
I'm able to add an item to the top of the ListBox using a Style but I would like to have that item scrolled off the top until a user pulls it down. Is there a way to set a default scroll position in the Style or in Template? I've read a few example of scrolling to a particular item once there is data using listBox.ScrollToItem, but that didn't work in my test application, or getting a handle on the ScrollViewer and using ScrollToVerticalOffset.
<phone:PhoneApplicationPage.Resources>
<Style x:Key="StoryStyle" TargetType="ListBox">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="BorderThickness" Value="0"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBox">
<ScrollViewer x:Name="ScrollViewer" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Foreground="{TemplateBinding Foreground}" Padding="{TemplateBinding Padding}">
<StackPanel>
<Button Content="Refresh"></Button>
<ItemsPresenter/>
</StackPanel>
</ScrollViewer>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
<Grid x:Name="LayoutRoot" Background="Transparent">
<controls:Panorama ItemsSource="{Binding Programs}" x:Name="AllPrograms">
<controls:Panorama.Title>
<TextBlock></TextBlock>
</controls:Panorama.Title>
<controls:Panorama.HeaderTemplate>
<DataTemplate>
<TextBlock Text="{Binding Title}" />
</DataTemplate>
</controls:Panorama.HeaderTemplate>
<controls:Panorama.ItemTemplate>
<DataTemplate>
<ListBox Margin="0,0,-12,0" ItemsSource="{Binding Stories}" Style="{StaticResource StoryStyle}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,0,0,17" Width="432" Height="80">
<TextBlock Text="{Binding SensibleTitle}" TextWrapping="Wrap" />
<TextBlock><Run Text="{Binding Duration, StringFormat='hh\\:mm\\:ss'}"></Run><Run Text=", "/><Run Text="{Binding DisplayDate, StringFormat='MMMM dd, yyyy'}"/></TextBlock>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DataTemplate>
</controls:Panorama.ItemTemplate>
</controls:Panorama>
</Grid>

Answer 1

Try changing SelectedIndex for ListBox.