如何使用滑入动画在ItemsControl中设置插入对象的动画？

<ItemsControl ItemsSource="{Binding YourData}">
    <ItemsControl.ItemContainerStyle>
        <Style TargetType="ContentPresenter">
            <Setter Property="Margin" Value="0,50,0,0" />
            <Setter Property="RenderTransform">
                <Setter.Value>
                    <TranslateTransform X="-200" />
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <EventTrigger RoutedEvent="Loaded">
                    <BeginStoryboard>
                        <Storyboard>
                            <DoubleAnimation From="-200" To="0" Duration="0:0:0.5" />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </ItemsControl.ItemContainerStyle>
    <ItemsControl.ItemTemplate>
        <DataTemplate>
            <!-- 定义你的项的内容 -->
        </DataTemplate>
    </ItemsControl.ItemTemplate>
</ItemsControl>