WPF文本框动画不工作

我有一个文本框，然后是一个动画，但只有当文本框聚焦时。

然而，这似乎不工作，我猜，因为动画是独立的控制模板?我怎样才能把这两者结合起来呢?以下是我目前所掌握的信息。

    <Window.Resources>
    <SolidColorBrush x:Key="TextBox.Static.Border" Color="#FFABAdB3"/>
    <SolidColorBrush x:Key="TextBox.MouseOver.Border" Color="#FF7EB4EA"/>
    <SolidColorBrush x:Key="TextBox.Focus.Border" Color="#FF569DE5"/>
    <Style x:Key="TextBoxStyle1" TargetType="{x:Type TextBox}">
        <Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.WindowBrushKey}}"/>
        <Setter Property="BorderBrush" Value="{StaticResource TextBox.Static.Border}"/>
        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
        <Setter Property="BorderThickness" Value="1"/>
        <Setter Property="KeyboardNavigation.TabNavigation" Value="None"/>
        <Setter Property="HorizontalContentAlignment" Value="Left"/>
        <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
        <Setter Property="AllowDrop" Value="true"/>
        <Setter Property="ScrollViewer.PanningMode" Value="VerticalFirst"/>
        <Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type TextBox}">
                    <Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" SnapsToDevicePixels="True">
                        <ScrollViewer x:Name="PART_ContentHost" Focusable="false" HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden"/>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsEnabled" Value="false">
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter Property="BorderBrush" TargetName="border" Value="Transparent"/>
                        </Trigger>
                        <Trigger Property="IsKeyboardFocused" Value="true">
                            <Setter Property="BorderBrush" TargetName="border" Value="Transparent"/>
                              <Trigger.EnterActions>
                            <BeginStoryboard>
                            <Storyboard>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="rectangle">
            <EasingDoubleKeyFrame KeyTime="0" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.6" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.66" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1.2" Value="1"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[0].(ScaleTransform.ScaleX)" Storyboard.TargetName="rectangle">
            <EasingDoubleKeyFrame KeyTime="0" Value="1"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.6" Value="51.274"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.66" Value="51.274"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1.2" Value="97.205"/>
        </DoubleAnimationUsingKeyFrames>
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="rectangle">
            <EasingDoubleKeyFrame KeyTime="0" Value="0"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.6" Value="53.542"/>
            <EasingDoubleKeyFrame KeyTime="0:0:0.66" Value="53.542"/>
            <EasingDoubleKeyFrame KeyTime="0:0:1.2" Value="4.625"/>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard></BeginStoryboard></Trigger.EnterActions>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <MultiTrigger>
                <MultiTrigger.Conditions>
                    <Condition Property="IsInactiveSelectionHighlightEnabled" Value="true"/>
                    <Condition Property="IsSelectionActive" Value="false"/>
                </MultiTrigger.Conditions>
                <Setter Property="SelectionBrush" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
            </MultiTrigger>
        </Style.Triggers>
    </Style>
</Window.Resources>
  <Grid>
    <TextBox Margin="180,142.5,129,153.5" BorderBrush="{x:Null}" Background="{x:Null}" SelectionBrush="{x:Null}" Style="{DynamicResource TextBoxStyle1}">TextBox</TextBox>
    <Path Data="M0.5,0.75 L170,0.5" Fill="#FFF4F4F5" HorizontalAlignment="Left" Height="1.75" Margin="180,163.781,0,0" Stroke="Black" VerticalAlignment="Top" Width="208" Stretch="Fill" RenderTransformOrigin="0.5,0.5">
        <Path.RenderTransform>
            <TransformGroup>
                <ScaleTransform/>
                <SkewTransform/>
                <RotateTransform Angle="0.204"/>
                <TranslateTransform/>
            </TransformGroup>
        </Path.RenderTransform>
    </Path>
    <Rectangle x:Name="rectangle" Fill="#FF00E8FF" HorizontalAlignment="Left" Height="1.125" Margin="278.29,164.083,0,0" Stroke="{x:Null}" VerticalAlignment="Top" Width="2.13" RenderTransformOrigin="0.5,0.5" Opacity="0">
        <Rectangle.RenderTransform>
            <TransformGroup>
                <ScaleTransform/>
                <SkewTransform/>
                <RotateTransform/>
                <TranslateTransform/>
            </TransformGroup>
        </Rectangle.RenderTransform>
    </Rectangle>
</Grid>