Windows Phone srcollview滑動

<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
            <ScrollViewer HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
                <Image Source="w02.jpg" Stretch="None" HorizontalAlignment="Left" VerticalAlignment="Top"/>
            </ScrollViewer>
         </Grid>