How scroll selection on picture when zoom in.

[thienhoang72]

<ListView Name="lst_intro">
<ListView.ItemTemplate>
<DataTemplate>
<Image Source="{Binding link}"
Stretch="Uniform"
RenderTransformOrigin="0.5,0.5"
ManipulationDelta="img_intro_ManipulationDelta"
ManipulationMode="Scale">
<Image.RenderTransform>
<CompositeTransform/>
</Image.RenderTransform>


</Image>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

private void img_intro_ManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
{
Image img = sender as Image;
CompositeTransform ct = img.RenderTransform as CompositeTransform;
ct.ScaleX *= e.Delta.Scale;
ct.ScaleY *= e.Delta.Scale;
if (ct.ScaleX < mincale) ct.ScaleX = mincale;
if (ct.ScaleY < mincale) ct.ScaleY = mincale;

ScaleTransform scale=new ScaleTransform();


}