How to place a ContextMenu in a ListBox - windows-phone-7

Question

I am trying to place a ContextMenu within the DataTemplate of my ListBox. The ListBox is placed within a PivotItem. For some reason, the ContextMenu does not show up with an item in the ListBox is pressed. I am unsure of the error since nothing shows in the Error List or while debugging.
MainPage.xaml
<phone:PhoneApplicationPage.Resources>
<Style x:Key="MyStyle" TargetType="ListBoxItem">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Padding" Value="0" />
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalContentAlignment" Value="Top"/>
<Setter Property ="Foreground" Value="White" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border x:Name="LayoutRoot" Background="{TemplateBinding Background}"
HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="CommonStates">
<VisualState x:Name="Normal"/>
<VisualState x:Name="MouseOver" />
<VisualState x:Name="Disabled">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="LayoutRoot" Storyboard.TargetProperty="Background">
<DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TransparentBrush}"/>
</ObjectAnimationUsingKeyFrames>
<DoubleAnimation Storyboard.TargetName="ContentContainer" Storyboard.TargetProperty="Opacity" Duration="0" To=".5" />
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Unselected"/>
<VisualState x:Name="Selected">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetName="brd"
Storyboard.TargetProperty="BorderThickness">
<DiscreteObjectKeyFrame KeyTime="0" Value="2" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="brd" CornerRadius="10" BorderBrush="{StaticResource PhoneAccentBrush}" Width="Auto" BorderThickness="{TemplateBinding BorderThickness}">
<Image x:Name="recentImage" Source="{Binding Source}" Margin="12" Width="115"/>
</Border>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</phone:PhoneApplicationPage.Resources>
<phone:PivotItem Header="recent">
<ListBox x:Name="Recent" ItemsSource="{Binding Pictures}" Margin="8"
SelectionChanged="recent_SelectionChanged" toolkit:TiltEffect.IsTiltEnabled="True"
ItemContainerStyle="{StaticResource MyStyle}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<toolkit:ContextMenuService.ContextMenu>
<toolkit:ContextMenu x:Name="imgListContextMenu">
<toolkit:MenuItem Header="share" Tap="shareContextMenuItem_Tap"/>
<toolkit:MenuItem Header="favorite" Tap="favoriteContextMenuItem_Tap"/>
<toolkit:MenuItem Header="set as start screen" Tap="setAsStartScreenContextMenuItem_Tap"/>
<toolkit:MenuItem Header="delete" Tap="deleteContextMenuItem_Tap"/>
</toolkit:ContextMenu>
</toolkit:ContextMenuService.ContextMenu>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</phone:PivotItem>
Also, is Tap the best event handler method to use within each of the ContextMenu item?

Answer 1

why not use
<ListBox.ContextMenu>
<ContextMenu>...
</ListBox.ContextMenu>

Answer 2

Since my ListBox has its own custom style, I placed the contextmenu under where the image binding occurs.
Under the closing tag of VisualStateManager..
</VisualStateManager.VisualStateGroups>
<Border x:Name="brd" CornerRadius="10" BorderBrush="{StaticResource PhoneAccentBrush}" Width="Auto" BorderThickness="{TemplateBinding BorderThickness}">
<Image x:Name="recentImage" Source="{Binding Source}" Margin="12" Width="115"/>
</Border>
<toolkit:ContextMenuService.ContextMenu>
<toolkit:ContextMenu x:Name="imgListContextMenu">
...
</toolkit:ContextMenu>
</toolkit:ContextMenuService.ContextMenu>