Event Handler on DataTemplate in App.xaml Windows Phone 8.1

Question

I have a ListView populated by items having a different style thanks to an ItemTemplateSelector. The DataTemplates are placed in app.xaml as ressources like the following:

<DataTemplate x:Key="FollowingOuterTemplate">
        <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
            <FlyoutBase.AttachedFlyout>
                <MenuFlyout>
                    <MenuFlyoutItem Text="Delete" />
                    <MenuFlyoutItem Text="Refresh" />
                    <MenuFlyoutItem Text="Share" />
                </MenuFlyout>
            </FlyoutBase.AttachedFlyout>
            <StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">
                <StackPanel Orientation="Vertical" Width="282">
                    <TextBlock Grid.Row="0" FontSize="33" Text="{Binding Pseudo}" Foreground="Gray" Height="46" Margin="0,0,-0.333,0"/>
                    <TextBlock Grid.Row="1" FontSize="20" Text="{Binding NomPrenom}" Foreground="#5bc5eb" Height="27" Margin="0,0,-0.333,0"/>
                    <TextBlock Grid.Row="2" FontSize="20" Text="Appuyez pour ne plus suivre" Foreground="#BCC6CC" Height="27" Margin="0,0,-0.333,0"/>
                </StackPanel>
                <StackPanel Orientation="Vertical" HorizontalAlignment="Stretch" Width="113">
                    <Image Name="StatutContact"  Height="43" Source="/Ressources/Images/checkedTests2.png" Stretch="Fill" Margin="0,20,0,0" Width="44" HorizontalAlignment="Center"/>
                </StackPanel>
            </StackPanel>
        </StackPanel>
    </DataTemplate>

So now I would like to show the FlyoutBase attached menu when I'm holding an Item. But as the DataTemplate is in app.xaml and it's forbidden to add event handler there (app.xaml.cs is not having any constructor as it's not constructing pages). I would like to add a Holding event handler to the StackPanel that the FyloutBase Menu is attached to.

Anyone knows how to achieve that ?

Answer 1

不确定您是否真的不能做到这一点，但是Shawn Kendrot提出了Silverlight Toolkit的ContextMenuService的端口，该端口可以在他的Blog上解决您的问题。