How to set animations/transitions when adding elements to a ListViews?

Question

I have got a ListView wich I added Elements by binding. The ListView looks like:

Answer 1

This should work:

<ListView
    x:Name="lv">
    <ListView.ItemsPanel>
        <ItemsPanelTemplate>
            <VirtualizingStackPanel>
                <VirtualizingStackPanel.ChildrenTransitions>
                    <TransitionCollection>
                        <EntranceThemeTransition
                            FromHorizontalOffset="400" />
                    </TransitionCollection>
                </VirtualizingStackPanel.ChildrenTransitions>
            </VirtualizingStackPanel>
        </ItemsPanelTemplate>
    </ListView.ItemsPanel>
</ListView>

*Update:

You can also use ListView.ItemContainerTransitions to define these transitions.