设置GridView控件的滚动查看器位置

我正在开发一个Windows通用应用程序，我有这个GridView在Xaml:

<Grid Grid.Column="1"  Height="700" VerticalAlignment="Bottom" Name="GridPoints" Margin="0,0,0,0">
            <GridView x:Name="GridViewList"  ItemsSource="{Binding Points}" ItemClick="GridView_ItemClick"  IsItemClickEnabled="True"
                       ScrollViewer.VerticalScrollBarVisibility="Auto" ScrollViewer.HorizontalScrollBarVisibility="Disabled"
                      ScrollViewer.VerticalScrollMode="Enabled" ScrollViewer.HorizontalScrollMode="Disabled"
                      ItemContainerStyle="{Binding Source={StaticResource GridViewItemContainer}}" SelectedItem="{Binding SlectedPoint, Mode=TwoWay}"  >
                <GridView.ItemTemplate>...etc...

我需要更改滚动查看器的位置，以在绑定列表中显示我所选择的点的焦点

ScrollViewer.ScrollToVerticalOffset(double);