diff --git a/4-WPF资源-2资源层次/MainWindow.xaml b/4-WPF资源-2资源层次/MainWindow.xaml
index d053d55..0f7c312 100644
--- a/4-WPF资源-2资源层次/MainWindow.xaml
+++ b/4-WPF资源-2资源层次/MainWindow.xaml
@@ -3,10 +3,45 @@
         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:_4_WPF资源_2资源层次"
         mc:Ignorable="d"
-        Title="MainWindow" Height="450" Width="800">
-    <Grid>
+        Icon="public/003540AH4M72.jpg" Title="_4_WPF资源_2资源层次" Height="450" Width="800">
+    <Window.Resources>
+    </Window.Resources>
+    <StackPanel>
+        <Button Margin="5" Padding="15 5">Button</Button>
 
-    </Grid>
-</Window>
+        <Button Margin="5" Padding="15 5" FontWeight="Bold" FontSize="14">
+            <Button.Resources>
+                <ImageBrush x:Key="MyImageBrush" TileMode="Tile" ViewportUnits="Absolute" Viewport="0 0 10 10"
+                            ImageSource="public/003540AH4M72.jpg" Opacity="0.3" />
+            </Button.Resources>
+
+            <Button.Background>
+                <StaticResource ResourceKey="MyImageBrush" />
+            </Button.Background>
+            按钮
+        </Button>
+
+        <Button Background="{DynamicResource BunnyImageBrush}" Padding="5" Margin="5" FontWeight="Bold" FontSize="14">
+            <Button.Resources>
+                <ImageBrush x:Key="BunnyImageBrush" TileMode="Tile" ViewportUnits="Absolute" Viewport="0 0 32 32"
+                            ImageSource="public/003540AH4M72.jpg" Opacity="0.3" />
+            </Button.Resources>
+
+            <Button.Content>按钮</Button.Content>
+        </Button>
+
+        <Button Background="{DynamicResource BunnyImageBrush}" Padding="5" Margin="5" FontWeight="Bold" FontSize="14">
+            <Button.Resources>
+
+                <ImageBrush x:Key="BunnyImageBrush" x:Shared="False" TileMode="Tile" ViewportUnits="Absolute"
+                            Viewport="0 0 32 32"
+                            ImageSource="public/003540AH4M72.jpg" Opacity="0.3" />
+            </Button.Resources>
+
+            <Button.Content>x:Shared="False" 是否共享资源</Button.Content>
+        </Button>
+
+        <Button Name="FindResource" Click="FindResource_OnClick">查找资源</Button>
+    </StackPanel>
+</Window>
\ No newline at end of file
diff --git a/4-WPF资源-2资源层次/MainWindow.xaml.cs b/4-WPF资源-2资源层次/MainWindow.xaml.cs
index 547469f..1c0dacf 100644
--- a/4-WPF资源-2资源层次/MainWindow.xaml.cs
+++ b/4-WPF资源-2资源层次/MainWindow.xaml.cs
@@ -1,18 +1,10 @@
-using System.Text;
-using System.Windows;
+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 _4_WPF资源_2资源层次;
 
 /// <summary>
-/// Interaction logic for MainWindow.xaml
+///     Interaction logic for MainWindow.xaml
 /// </summary>
 public partial class MainWindow : Window
 {
@@ -20,4 +12,14 @@ public partial class MainWindow : Window
     {
         InitializeComponent();
     }
+
+    private void FindResource_OnClick(object sender, RoutedEventArgs e)
+    {
+        var button = (Button)sender;
+        var tryFindResource = button.TryFindResource("BunnyImageBrush");
+        Console.WriteLine($"尝试查找资源，找不到返回null：{tryFindResource}");
+
+        var findResource = button.FindResource("BunnyImageBrush");
+        Console.WriteLine($"尝试查找资源，找不到报错：{findResource}");
+    }
 }
\ No newline at end of file