diff --git a/WPF控件-11-Expander/App.xaml b/WPF控件-11-Expander/App.xaml
new file mode 100644
index 0000000..0ecab3f
--- /dev/null
+++ b/WPF控件-11-Expander/App.xaml
@@ -0,0 +1,9 @@
+<Application x:Class="WPF控件_11_Expander.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_Expander"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>
diff --git a/WPF控件-11-Expander/App.xaml.cs b/WPF控件-11-Expander/App.xaml.cs
new file mode 100644
index 0000000..940111f
--- /dev/null
+++ b/WPF控件-11-Expander/App.xaml.cs
@@ -0,0 +1,12 @@
+using System.Configuration;
+using System.Data;
+using System.Windows;
+
+namespace WPF控件_11_Expander;
+
+/// <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-Expander/AssemblyInfo.cs b/WPF控件-11-Expander/AssemblyInfo.cs
new file mode 100644
index 0000000..4a05c7d
--- /dev/null
+++ b/WPF控件-11-Expander/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-Expander/MainWindow.xaml b/WPF控件-11-Expander/MainWindow.xaml
new file mode 100644
index 0000000..aaa9d81
--- /dev/null
+++ b/WPF控件-11-Expander/MainWindow.xaml
@@ -0,0 +1,25 @@
+<Window x:Class="WPF控件_11_Expander.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_Expander"
+        Icon="public/003540AH4M72.jpg"
+        mc:Ignorable="d"
+        Title="WPF控件_11_Expander" Height="450" Width="800">
+    <StackPanel>
+        <Expander Margin="3" Padding="5" Header="Region One">
+            <Button Padding="3">Hidden Button One </Button>
+        </Expander>
+
+        <Expander Margin="5" Padding="5" Header="Region Two">
+            <TextBlock TextWrapping="Wrap">
+                Lorem ipsum dolor sit amet, consectetur adipiscing elit... 
+            </TextBlock>
+        </Expander>
+        
+        <Expander Margin="5" Padding="5" Header="Region Three">
+            <Button Padding="3">Hidden Button Two </Button>
+        </Expander>
+    </StackPanel>
+</Window>
diff --git a/WPF控件-11-Expander/MainWindow.xaml.cs b/WPF控件-11-Expander/MainWindow.xaml.cs
new file mode 100644
index 0000000..1ebd54f
--- /dev/null
+++ b/WPF控件-11-Expander/MainWindow.xaml.cs
@@ -0,0 +1,23 @@
+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_Expander;
+
+/// <summary>
+/// Interaction logic for MainWindow.xaml
+/// </summary>
+public partial class MainWindow : Window
+{
+    public MainWindow()
+    {
+        InitializeComponent();
+    }
+}
\ No newline at end of file
diff --git a/WPF控件-11-Expander/WPF控件-11-Expander.csproj b/WPF控件-11-Expander/WPF控件-11-Expander.csproj
new file mode 100644
index 0000000..a3efc6d
--- /dev/null
+++ b/WPF控件-11-Expander/WPF控件-11-Expander.csproj
@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>WinExe</OutputType>
+        <TargetFramework>net8.0-windows</TargetFramework>
+        <RootNamespace>WPF控件_11_Expander</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-Expander/public/003540AH4M72.jpg b/WPF控件-11-Expander/public/003540AH4M72.jpg
new file mode 100644
index 0000000..4aa96ac
Binary files /dev/null and b/WPF控件-11-Expander/public/003540AH4M72.jpg differ
diff --git a/WPF控件.sln b/WPF控件.sln
index 43b567f..ddabaeb 100644
--- a/WPF控件.sln
+++ b/WPF控件.sln
@@ -22,6 +22,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPF控件-10-TabItem", "WPF
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPF控件-10-TabItem-1", "WPF控件-10-TabItem-1\WPF控件-10-TabItem-1.csproj", "{BCBBBA3B-A8B8-4DF6-B5AB-52CDE81C1CE5}"
 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
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -72,5 +74,9 @@ Global
 		{BCBBBA3B-A8B8-4DF6-B5AB-52CDE81C1CE5}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BCBBBA3B-A8B8-4DF6-B5AB-52CDE81C1CE5}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BCBBBA3B-A8B8-4DF6-B5AB-52CDE81C1CE5}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D6659E10-D875-48FC-983F-8F2FF62FF0EB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{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
 	EndGlobalSection
 EndGlobal