wpf - 添加了新项目上的ListBox幻灯片动画

我正在制作新闻提要。这将经常更新，如果找到新项目，我想从顶部开始滑动新内容。

现在，通过执行以下操作使它逐渐消失：

<ListBox Grid.Row="0" Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5"  VerticalAlignment="Top" ItemsSource="{Binding NewsItems,UpdateSourceTrigger=PropertyChanged}" >
        <ListBox.ItemContainerStyle>
            <Style TargetType="{x:Type ListBoxItem}">
                <Style.Triggers>
                        <EventTrigger RoutedEvent="Loaded">
                        <EventTrigger.Actions>
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:2" />
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger.Actions>
                    </EventTrigger>
                </Style.Triggers>
            </Style>
            </ListBox.ItemContainerStyle>
        <ListBox.ItemTemplate>
        ....
</ListBox>

效果很好，但是我真的很想让该产品滑入。我已经尝试了所有可能找到但无法到达的东西。任何帮助将非常感激。

最佳答案

这是您要找的东西吗？

 <ListBox x:Name="lstBox" Grid.Row="0" Height="Auto" HorizontalAlignment="Stretch" Margin="5,5,5,5"  VerticalAlignment="Top" ItemsSource="{Binding NewsItems,UpdateSourceTrigger=PropertyChanged}" >
        <ListBox.ItemContainerStyle>
            <Style TargetType="{x:Type ListBoxItem}">
                <Setter Property="LayoutTransform">
                    <Setter.Value>
                        <ScaleTransform x:Name="transform" />
                    </Setter.Value>
                </Setter>
                <Style.Triggers>
                    <EventTrigger RoutedEvent="Loaded">
                        <EventTrigger.Actions>
                            <BeginStoryboard>
                                <Storyboard>
                                    <DoubleAnimation Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:2" />
                                    <DoubleAnimation Storyboard.TargetProperty="LayoutTransform.ScaleY" From="0" Duration="0:0:.2"/>
                                </Storyboard>
                            </BeginStoryboard>
                        </EventTrigger.Actions>
                    </EventTrigger>
                </Style.Triggers>
            </Style>
        </ListBox.ItemContainerStyle>
    </ListBox>