鼠标悬浮，闪烁动画；绑定变量，闪烁动画

前端代码

<Window x:Class="WpfApp2.Window3"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Title="Window3" Height="450" Width="800">
    <Grid>
        <StackPanel>
            <TextBlock Margin="5" 
                       Text="test"
                       FontSize="28"
                       FontWeight="Bold">
                <TextBlock.Foreground>
                    <SolidColorBrush Color="Black"/>
                </TextBlock.Foreground>
                <TextBlock.Style>
                    <Style TargetType="TextBlock">
                        <Style.Triggers>
                            <EventTrigger RoutedEvent="TextBlock.MouseEnter">
                                <EventTrigger.Actions>
                                    <BeginStoryboard Name="aa">
                                        <Storyboard>
                                            <ColorAnimation From="Black" 
                                                            To="Red" 
                                                            RepeatBehavior="Forever" 
                                                            Duration="0:0:0.5" 
                                                            Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" />
                                        </Storyboard>
                                    </BeginStoryboard>
                                </EventTrigger.Actions>
                            </EventTrigger>
                            <EventTrigger RoutedEvent="TextBlock.MouseLeave">
                                <EventTrigger.Actions>
                                    <StopStoryboard BeginStoryboardName="aa"/>
                                </EventTrigger.Actions>
                            </EventTrigger>

                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:Window3},Path=IsSelected}" Value="true">
                                <DataTrigger.EnterActions>
                                    <BeginStoryboard Name="bb">
                                        <Storyboard>
                                            <ColorAnimation From="Green" 
                                                            To="Yellow" 
                                                            RepeatBehavior="Forever" 
                                                            Duration="0:0:0.5" 
                                                            Storyboard.TargetProperty="(TextBlock.Foreground).(SolidColorBrush.Color)" />
                                        </Storyboard>
                                    </BeginStoryboard>
                                </DataTrigger.EnterActions>
                            </DataTrigger>
                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType=local:Window3},Path=IsSelected}" Value="false">
                                <DataTrigger.EnterActions>
                                    <StopStoryboard BeginStoryboardName="bb" />
                                </DataTrigger.EnterActions>
                            </DataTrigger>
                        </Style.Triggers>
                    </Style>
                </TextBlock.Style>
            </TextBlock>
        </StackPanel>
    </Grid>
</Window>

效果已经实现，后端代码协助调试，变量的绑定而已，模拟现实操心，2秒后绑定值变动

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace WpfApp2
{
    /// <summary>
    /// Window3.xaml 的交互逻辑
    /// </summary>
    public partial class Window3 : Window
    {
        public Window3()
        {
            InitializeComponent();

            Thread th = new System.Threading.Thread(() =>
            {
                while (true)
                {
                    Thread.Sleep(2000);
                    Dispatcher.Invoke(() =>
                    {
                        IsSelected = true;
                    });
                    Thread.Sleep(3000);
                    Dispatcher.Invoke(() =>
                    {
                        IsSelected = false;
                    });
                }
            });
            th.IsBackground = true;
            th.Start();
        }

        public bool IsSelected
        {
            get { return (bool)GetValue(IsSelectedProperty); }
            set { SetValue(IsSelectedProperty, value); }
        }

        public static readonly DependencyProperty IsSelectedProperty =
            DependencyProperty.Register("IsSelected", typeof(bool), typeof(Window3), new PropertyMetadata(false));
    }
}