WPF EventTrigger 通过 Storyboard 跨控件触发

上一篇中的效果是，鼠标进入 StackPanel 会触发它倾斜一个角度，我有一个想法：鼠标进入 StackPanel 的同事如何更改它内部位 TextBlock 文字的颜色，鼠标离开后又恢复颜色。

方法是在 DataTemplate 中对 StackPanel 增加 EventTrigger 实现的。

▲ 实现效果，鼠标离开后归正的同事文字颜色恢复白色。

DataTemplate - FruitInfoDT.xaml ：

<UserControl x:Class="MyUILib.FruitInfoDT"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             mc:Ignorable="d" 
             d:DesignHeight="300" d:DesignWidth="300">
    <Grid>
        <Grid.Resources>

            <Style TargetType="{x:Type StackPanel}">
                <Style.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter Property="RenderTransform">
                            <Setter.Value>
                                <RotateTransform Angle="5"></RotateTransform>
                            </Setter.Value>
                        </Setter>
                        <Setter Property="Background" Value="#3B9CFB" />
                    </Trigger>
                </Style.Triggers>
            </Style>

        </Grid.Resources>

        <StackPanel Orientation="Vertical" Margin="10" x:Name="sp">

            <StackPanel.Triggers>
                
                <EventTrigger RoutedEvent="StackPanel.MouseEnter" SourceName="sp">
                    <BeginStoryboard>
                        <Storyboard >
                            <ColorAnimation Storyboard.TargetName="txb" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)"
                                            From="White" To="Red" Duration="00:00:0.2"/>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
                <EventTrigger RoutedEvent="StackPanel.MouseLeave" SourceName="sp">
                    <BeginStoryboard>
                        <Storyboard >
                            <ColorAnimation Storyboard.TargetName="txb" Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)"
                                            From="Red" To="White" Duration="00:00:0.3"/>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </StackPanel.Triggers>

            <Image Source="{Binding Img}" Width="96" Height="96" />
            <TextBlock HorizontalAlignment="Center" Foreground="White" Text="{Binding Info}"  Name="txb"/>

        </StackPanel>
    </Grid>
</UserControl>