diff --git a/3-WPF命令.sln b/3-WPF命令.sln
index d396347..76339eb 100644
--- a/3-WPF命令.sln
+++ b/3-WPF命令.sln
@@ -24,6 +24,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "5-WPF样式和行为-2创
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "5-WPF样式和行为-3设置属性", "5-WPF样式和行为-3设置属性\5-WPF样式和行为-3设置属性.csproj", "{D8E267CE-6F9F-4455-A3F4-849CA9FB3CDC}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "5-WPF样式和行为-4关联事件处理程序", "5-WPF样式和行为-4关联事件处理程序\5-WPF样式和行为-4关联事件处理程序.csproj", "{CB328FFD-8DDD-4AD1-B45B-7CE14D229E26}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -78,5 +80,9 @@ Global
 		{D8E267CE-6F9F-4455-A3F4-849CA9FB3CDC}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D8E267CE-6F9F-4455-A3F4-849CA9FB3CDC}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D8E267CE-6F9F-4455-A3F4-849CA9FB3CDC}.Release|Any CPU.Build.0 = Release|Any CPU
+		{CB328FFD-8DDD-4AD1-B45B-7CE14D229E26}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{CB328FFD-8DDD-4AD1-B45B-7CE14D229E26}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{CB328FFD-8DDD-4AD1-B45B-7CE14D229E26}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{CB328FFD-8DDD-4AD1-B45B-7CE14D229E26}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal
diff --git a/5-WPF样式和行为-4关联事件处理程序/5-WPF样式和行为-4关联事件处理程序.csproj b/5-WPF样式和行为-4关联事件处理程序/5-WPF样式和行为-4关联事件处理程序.csproj
new file mode 100644
index 0000000..29c97f9
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/5-WPF样式和行为-4关联事件处理程序.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net8.0-windows</TargetFramework>
+        <RootNamespace>_5_WPF样式和行为_4关联事件处理程序</RootNamespace>
+        <Nullable>enable</Nullable>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <UseWPF>true</UseWPF>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <Resource Include="public\003540AH4M72.jpg">
+            <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+        </Resource>
+    </ItemGroup>
+
+</Project>
diff --git a/5-WPF样式和行为-4关联事件处理程序/App.xaml b/5-WPF样式和行为-4关联事件处理程序/App.xaml
new file mode 100644
index 0000000..1ddebe2
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="_5_WPF样式和行为_4关联事件处理程序.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:_5_WPF样式和行为_4关联事件处理程序"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/5-WPF样式和行为-4关联事件处理程序/App.xaml.cs b/5-WPF样式和行为-4关联事件处理程序/App.xaml.cs
new file mode 100644
index 0000000..6f065b7
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/App.xaml.cs
@@ -0,0 +1,12 @@
+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace _5_WPF样式和行为_4关联事件处理程序;
+
+/// <summary>
+/// Interaction logic for App.xaml
+/// </summary>
+public partial class App : Application
+{
+}
\ No newline at end of file
diff --git a/5-WPF样式和行为-4关联事件处理程序/AssemblyInfo.cs b/5-WPF样式和行为-4关联事件处理程序/AssemblyInfo.cs
new file mode 100644
index 0000000..4a05c7d
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/AssemblyInfo.cs
@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+    //(used if a resource is not found in the page,
+    // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+    //(used if a resource is not found in the page,
+    // app, or any theme specific resource dictionaries)
+)]
\ No newline at end of file
diff --git a/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml b/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml
new file mode 100644
index 0000000..775d5a2
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml
@@ -0,0 +1,18 @@
+<Window x:Class="_5_WPF样式和行为_4关联事件处理程序.MainWindow"
+        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"
+        mc:Ignorable="d"
+        Icon="public/003540AH4M72.jpg" Title="_5_WPF样式和行为_4关联事件处理程序" Height="450" Width="800">
+    <Window.Resources>
+        <Style x:Key="MouseOverHighLightStyle">
+            <EventSetter Event="TextBlock.MouseEnter" Handler="EventSetter_MoueEnter" />
+            <EventSetter Event="TextBlock.MouseLeave" Handler="EventSetter_MouseLeave" />
+            <Setter Property="TextBlock.Padding" Value="5 " />
+        </Style>
+    </Window.Resources>
+    <StackPanel>
+        <TextBlock Style="{StaticResource MouseOverHighLightStyle}">Hover 这个</TextBlock>
+    </StackPanel>
+</Window>
\ No newline at end of file
diff --git a/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml.cs b/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml.cs
new file mode 100644
index 0000000..ff6f7a4
--- /dev/null
+++ b/5-WPF样式和行为-4关联事件处理程序/MainWindow.xaml.cs
@@ -0,0 +1,27 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace _5_WPF样式和行为_4关联事件处理程序;
+
+/// <summary>
+///     Interaction logic for MainWindow.xaml
+/// </summary>
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+    }
+
+    private void EventSetter_MoueEnter(object sender, MouseEventArgs e)
+    {
+        ((TextBlock)sender).Background = new SolidColorBrush(Colors.LightGoldenrodYellow);
+    }
+
+    private void EventSetter_MouseLeave(object sender, MouseEventArgs e)
+    {
+        ((TextBlock)sender).Background = null;
+    }
+}
\ No newline at end of file
diff --git a/5-WPF样式和行为-4关联事件处理程序/public/003540AH4M72.jpg b/5-WPF样式和行为-4关联事件处理程序/public/003540AH4M72.jpg
new file mode 100644
index 0000000..4aa96ac
Binary files /dev/null and b/5-WPF样式和行为-4关联事件处理程序/public/003540AH4M72.jpg differ