diff --git a/WPF控件-11-Expander2/App.xaml b/WPF控件-11-Expander2/App.xaml
new file mode 100644
index 0000000..80f8f76
--- /dev/null
+++ b/WPF控件-11-Expander2/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="WPF控件_11_Expander2.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:WPF控件_11_Expander2"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/WPF控件-11-Expander2/App.xaml.cs b/WPF控件-11-Expander2/App.xaml.cs
new file mode 100644
index 0000000..2d9607c
--- /dev/null
+++ b/WPF控件-11-Expander2/App.xaml.cs
@@ -0,0 +1,12 @@
+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace WPF控件_11_Expander2;
+
+/// <summary>
+/// Interaction logic for App.xaml
+/// </summary>
+public partial class App : Application
+{
+}
\ No newline at end of file
diff --git a/WPF控件-11-Expander2/AssemblyInfo.cs b/WPF控件-11-Expander2/AssemblyInfo.cs
new file mode 100644
index 0000000..4a05c7d
--- /dev/null
+++ b/WPF控件-11-Expander2/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/WPF控件-11-Expander2/MainWindow.xaml b/WPF控件-11-Expander2/MainWindow.xaml
new file mode 100644
index 0000000..4fb1393
--- /dev/null
+++ b/WPF控件-11-Expander2/MainWindow.xaml
@@ -0,0 +1,25 @@
+<Window x:Class="WPF控件_11_Expander2.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"
+        xmlns:local="clr-namespace:WPF控件_11_Expander2" 
+        Icon="public/003540AH4M72.jpg"
+        mc:Ignorable="d"
+        Title="WPF控件_11_Expander2" Height="450" Width="800">
+    <StackPanel>
+        <Expander Margin="3" Padding="5" Header="Region One" ExpandDirection="Left" Collapsed="Expander_OnCollapsed">
+            <Button Padding="3">Hidden Button One </Button>
+        </Expander>
+
+        <Expander Margin="5" Padding="5" Header="Region Two" ExpandDirection="Right">
+            <TextBlock TextWrapping="Wrap">
+                Lorem ipsum dolor sit amet, consectetur adipiscing elit... 
+            </TextBlock>
+        </Expander>
+        
+        <Expander Margin="5" Padding="5" Header="Region Three" ExpandDirection="Up">
+            <Button Padding="3">Hidden Button Two </Button>
+        </Expander>
+    </StackPanel>
+</Window>
diff --git a/WPF控件-11-Expander2/MainWindow.xaml.cs b/WPF控件-11-Expander2/MainWindow.xaml.cs
new file mode 100644
index 0000000..0c42067
--- /dev/null
+++ b/WPF控件-11-Expander2/MainWindow.xaml.cs
@@ -0,0 +1,28 @@
+using System.Text;
+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.Navigation;
+using System.Windows.Shapes;
+
+namespace WPF控件_11_Expander2;
+
+/// <summary>
+/// Interaction logic for MainWindow.xaml
+/// </summary>
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+    }
+
+    private void Expander_OnCollapsed(object sender, RoutedEventArgs e)
+    {
+        Console.WriteLine("关闭？");
+    }
+}
\ No newline at end of file
diff --git a/WPF控件-11-Expander2/WPF控件-11-Expander2.csproj b/WPF控件-11-Expander2/WPF控件-11-Expander2.csproj
new file mode 100644
index 0000000..885d0f4
--- /dev/null
+++ b/WPF控件-11-Expander2/WPF控件-11-Expander2.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net8.0-windows</TargetFramework>
+        <RootNamespace>WPF控件_11_Expander2</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/WPF控件-11-Expander2/public/003540AH4M72.jpg b/WPF控件-11-Expander2/public/003540AH4M72.jpg
new file mode 100644
index 0000000..4aa96ac
Binary files /dev/null and b/WPF控件-11-Expander2/public/003540AH4M72.jpg differ
diff --git a/WPF控件.sln b/WPF控件.sln
index ddabaeb..9ea711d 100644
--- a/WPF控件.sln
+++ b/WPF控件.sln
@@ -24,6 +24,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPF控件-10-TabItem-1", "W
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPF控件-11-Expander", "WPF控件-11-Expander\WPF控件-11-Expander.csproj", "{D6659E10-D875-48FC-983F-8F2FF62FF0EB}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPF控件-11-Expander2", "WPF控件-11-Expander2\WPF控件-11-Expander2.csproj", "{0D2CEE95-6B52-4D7D-B001-ED6AB4262875}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -78,5 +80,9 @@ Global
 		{D6659E10-D875-48FC-983F-8F2FF62FF0EB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D6659E10-D875-48FC-983F-8F2FF62FF0EB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D6659E10-D875-48FC-983F-8F2FF62FF0EB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0D2CEE95-6B52-4D7D-B001-ED6AB4262875}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0D2CEE95-6B52-4D7D-B001-ED6AB4262875}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0D2CEE95-6B52-4D7D-B001-ED6AB4262875}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0D2CEE95-6B52-4D7D-B001-ED6AB4262875}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal