ScrollIntoView Is not working for a horizontal list of items

I am  loading the contents to a listbox horizontally using the below layout.

<ScrollViewer HorizontalScrollBarVisibility="Auto" Style="{StaticResource ResourceKey=customScrollViewer}" HorizontalContentAlignment="Center" HorizontalAlignment="Center"><ListBox ItemsSource="{Binding PagesCollection}" Name="lviewBookPages" Margin="5" BorderThickness="0" ><ListBox.ItemsPanel><ItemsPanelTemplate><WrapPanel Orientation="Horizontal"></WrapPanel></ItemsPanelTemplate></ListBox.ItemsPanel><ListBox.ItemTemplate><DataTemplate><ItemsControl><button/></ItemsControl>                        </DataTemplate></ListBox.ItemTemplate></ListBox>

The above will give me a list of buttons arranged horizontally inside a scrollbar. Now i want to position the scrollbar to the selected button ,
  

System.Windows.Controls.Primitives.Selector selector = lviewBookPages;
            (selector as ListBox).ScrollIntoView(selector.SelectedItem);

I tried the above code , but not working . Is it because of
 

<ItemsPanelTemplate><WrapPanel Orientation="Horizontal"></WrapPanel></ItemsPanelTemplate>.

How can i set scroll position to an item in thehorizontal list ?

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