Mvvm event binding in ListBox

When using mvvmlight, I bind a tap event to the listboxitem of ListBox.

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.WP71"

 

<ListBoxItem>      <StackPanel>            <i:Interaction.Triggers>                   <i:EventTrigger EventName="Tap">                            <cmd:EventToCommand Command="{Binding TapCommand}"></cmd:EventToCommand>                   </i:EventTrigger>             </i:Interaction.Triggers>            <TextBlock Text="11"></TextBlock>            <TextBlock Text="222"></TextBlock>      </StackPanel></ListBoxItem>

public ICommand TapCommand { get; set; }TapCommand = new RelayCommand(Tapped);void Tapped(){            MessageBox.Show("test");}

In this way, you can listen to the TAP event.

But now I want to use a template to bind data to the background.

The template is as follows:

<ListBox ItemsSource="{Binding Path=UserList}">            <ListBox.ItemTemplate>                <DataTemplate>                    <StackPanel>                        <i:Interaction.Triggers>                            <i:EventTrigger EventName="Tap">                                <cmd:EventToCommand Command="{Binding TapCommand}"></cmd:EventToCommand>                            </i:EventTrigger>                        </i:Interaction.Triggers>                        <TextBlock Text="{Binding id}"></TextBlock>                        <TextBlock Text="{Binding name}"></TextBlock>                    </StackPanel>                </DataTemplate>            </ListBox.ItemTemplate>        </ListBox>

At this time, the tap page cannot monitor the tap event. How can this problem be solved?