怎么在删除hc:Tag时 给Closing 事件 绑定命令

[simadi]

<hc:TagContainer Grid.Row="1" ItemContainerStyle="{StaticResource TagCustomStyle}" Margin="11" Padding="5" ItemsSource="{Binding DataList}"/>

    <Style x:Key="TagCustomStyle" BasedOn="{StaticResource TagBaseStyle}" TargetType="hc:Tag">
        <Setter Property="Margin" Value="5"/>
        <Setter Property="FontSize" Value="14"/>
        <Setter Property="Content" Value="{Binding RoleName}"/>
        <Setter Property="ShowCloseButton" Value="{Binding CanDele}"/>
        <Style.Triggers>
            <EventTrigger RoutedEvent="Closing">
                这里要绑定一个命令,对应的命令要删除库里的数据,该怎么绑定这个命令??求指教谢谢
            </EventTrigger>
        </Style.Triggers>
    </Style>

[NaBian]

<hc:TagContainer Tag.Closing="事件响应方法" Grid.Row="1" ItemContainerStyle="{StaticResource TagCustomStyle}" Margin="11" Padding="5" ItemsSource="{Binding DataList}"/>

[simadi]

thank u!