Windows Phone Universal App image zoom

Question

I'm trying to make my scrollviewer zoom work. Without ZoomMaxFactor and ZoomMinFactor it is working great, but no limits for zoom. So i added the properties ZoomMaxMinFactor and my image are resizing without any interaction, i already looked for an answer but got nothing.

My XAML:

<PivotItem Header="item 1" >
    <StackPanel x:Name="MyPanel" Width="360" Height="460">
        <ScrollViewer Width="360" Height="460" ZoomMode="Enabled" 
             VerticalScrollBarVisibility="Visible"
             HorizontalScrollBarVisibility="Visible"
             MaxZoomFactor="0.5" MinZoomFactor="0.5">
                    <Image x:Name="MyCoolImg"/>
        </ScrollViewer>
    </StackPanel>
</PivotItem>

And code behind:

protected async override void OnNavigatedTo(NavigationEventArgs e)
{
    MyCoolImg.Source = (BitmapImage)e.Parameter;
}

Thanks for your time =)

Answer 1

I got it,

New XAML:

<PivotItem Header="item1" >
     <Grid Grid.Row="1">
          <ScrollViewer Width="360" Height="470" HorizontalAlignment="Left" VerticalAlignment="Top" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto" ZoomMode="Enabled" MinZoomFactor="0.9" MaxZoomFactor="2.8">
               <StackPanel>
                    <Image Width="360" Height="470" x:Name="myCoolImg" Stretch="Uniform" HorizontalAlignment="Left" VerticalAlignment="Top"/>
               </StackPanel>
          </ScrollViewer>
     </Grid>
</PivotItem>

Thanks for the help Kennyzx!