Windows Phone 8 Pivot控件虚拟化

Question

I am trying to make an image scrolling app that scrolls images on swipe, the problem is all my images are loaded in memory at once when my app starts. Can anyone tell how to implement virtualization?

C#:

 public ObservableCollection<im> imagelist { get; set; }

public ImageGalaryUc()
    {
        InitializeComponent();
        imagelist = new ObservableCollection<im>();
        this.DataContext = this;
       // ImageStack.ItemsSource = new VirtualSongList();
        this.Loaded += ImageGalaryUc_Loaded;
    }

XAML:

<Controls:Pivot x:Name="ImageStack" ItemsSource="{Binding imagelist}" >

                <Controls:Pivot.ItemTemplate>
                    <DataTemplate>
                        <Grid>
                            <Image Source="{Binding bimage}" />

                        </Grid>
                    </DataTemplate>
                </Controls:Pivot.ItemTemplate>
            </Controls:Pivot>

Answer 1

Have a look at this sample http://code.msdn.microsoft.com/wpapps/Basic-Lens-sample-359fda1b

It contains a component called media viewer - which implements pretty similar behaviour and virtualises.