diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 81ab608..bd73932 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -413,7 +413,6 @@
     <Resource Include="Image\favicon.ico" />
   </ItemGroup>
   <ItemGroup>
-    <Resource Include="Image\close3.png" />
     <Resource Include="Image\d1_b.png" />
     <Resource Include="Image\d1_r.png" />
     <Resource Include="Image\d2_b.png" />

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 81ab608..bd73932 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -413,7 +413,6 @@
     <Resource Include="Image\favicon.ico" />
   </ItemGroup>
   <ItemGroup>
-    <Resource Include="Image\close3.png" />
     <Resource Include="Image\d1_b.png" />
     <Resource Include="Image\d1_r.png" />
     <Resource Include="Image\d2_b.png" />
diff --git a/Correlator/Fonts/iconfont.ttf b/Correlator/Fonts/iconfont.ttf
index ccfb9c8..395515a 100644
--- a/Correlator/Fonts/iconfont.ttf
+++ b/Correlator/Fonts/iconfont.ttf
Binary files differ

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 81ab608..bd73932 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -413,7 +413,6 @@
     <Resource Include="Image\favicon.ico" />
   </ItemGroup>
   <ItemGroup>
-    <Resource Include="Image\close3.png" />
     <Resource Include="Image\d1_b.png" />
     <Resource Include="Image\d1_r.png" />
     <Resource Include="Image\d2_b.png" />
diff --git a/Correlator/Fonts/iconfont.ttf b/Correlator/Fonts/iconfont.ttf
index ccfb9c8..395515a 100644
--- a/Correlator/Fonts/iconfont.ttf
+++ b/Correlator/Fonts/iconfont.ttf
Binary files differ
diff --git a/Correlator/Image/close3.png b/Correlator/Image/close3.png
deleted file mode 100644
index b5e6fed..0000000
--- a/Correlator/Image/close3.png
+++ /dev/null
Binary files differ

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 81ab608..bd73932 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -413,7 +413,6 @@
     <Resource Include="Image\favicon.ico" />
   </ItemGroup>
   <ItemGroup>
-    <Resource Include="Image\close3.png" />
     <Resource Include="Image\d1_b.png" />
     <Resource Include="Image\d1_r.png" />
     <Resource Include="Image\d2_b.png" />
diff --git a/Correlator/Fonts/iconfont.ttf b/Correlator/Fonts/iconfont.ttf
index ccfb9c8..395515a 100644
--- a/Correlator/Fonts/iconfont.ttf
+++ b/Correlator/Fonts/iconfont.ttf
Binary files differ
diff --git a/Correlator/Image/close3.png b/Correlator/Image/close3.png
deleted file mode 100644
index b5e6fed..0000000
--- a/Correlator/Image/close3.png
+++ /dev/null
Binary files differ
diff --git a/Correlator/ViewModels/BigPictureViewModel.cs b/Correlator/ViewModels/BigPictureViewModel.cs
index d77dab8..7f1a055 100644
--- a/Correlator/ViewModels/BigPictureViewModel.cs
+++ b/Correlator/ViewModels/BigPictureViewModel.cs
@@ -1,5 +1,4 @@
 using System;
-using System.IO;
 using System.Windows.Media.Imaging;
 using Prism.Commands;
 using Prism.Mvvm;
@@ -9,15 +8,15 @@
 {
     public class BigPictureViewModel : BindableBase, IDialogAware
     {
-        public string Title { get; private set; } = string.Empty;
-        private BitmapFrame _bigImageFrame;
+        public string Title => string.Empty;
+        private BitmapImage _bigPictureBitmapImage;
 
-        public BitmapFrame BigImageFrame
+        public BitmapImage BigPictureBitmapImage
         {
-            get => _bigImageFrame;
+            get => _bigPictureBitmapImage;
             set
             {
-                _bigImageFrame = value;
+                _bigPictureBitmapImage = value;
                 RaisePropertyChanged();
             }
         }
@@ -47,21 +46,7 @@
         public void OnDialogOpened(IDialogParameters parameters)
         {
             var imageFullPath = parameters.GetValue<string>("ImageFullPath");
-
-            //解决图片打开然后关闭之后，显示文件被占用无法删除的问题
-            using (var reader = new BinaryReader(File.Open(imageFullPath, FileMode.Open)))
-            {
-                var fi = new FileInfo(imageFullPath);
-                var bytes = reader.ReadBytes((int)fi.Length);
-                reader.Close();
-
-                var bitmapImage = new BitmapImage();
-                bitmapImage.BeginInit();
-                bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
-                bitmapImage.StreamSource = new MemoryStream(bytes);
-                bitmapImage.EndInit();
-                BigImageFrame = BitmapFrame.Create(bitmapImage);
-            }
+            BigPictureBitmapImage = new BitmapImage(new Uri(imageFullPath, UriKind.Absolute));
         }
     }
 }
\ No newline at end of file

diff --git a/Correlator/Correlator.csproj b/Correlator/Correlator.csproj
index 81ab608..bd73932 100644
--- a/Correlator/Correlator.csproj
+++ b/Correlator/Correlator.csproj
@@ -413,7 +413,6 @@
     <Resource Include="Image\favicon.ico" />
   </ItemGroup>
   <ItemGroup>
-    <Resource Include="Image\close3.png" />
     <Resource Include="Image\d1_b.png" />
     <Resource Include="Image\d1_r.png" />
     <Resource Include="Image\d2_b.png" />
diff --git a/Correlator/Fonts/iconfont.ttf b/Correlator/Fonts/iconfont.ttf
index ccfb9c8..395515a 100644
--- a/Correlator/Fonts/iconfont.ttf
+++ b/Correlator/Fonts/iconfont.ttf
Binary files differ
diff --git a/Correlator/Image/close3.png b/Correlator/Image/close3.png
deleted file mode 100644
index b5e6fed..0000000
--- a/Correlator/Image/close3.png
+++ /dev/null
Binary files differ
diff --git a/Correlator/ViewModels/BigPictureViewModel.cs b/Correlator/ViewModels/BigPictureViewModel.cs
index d77dab8..7f1a055 100644
--- a/Correlator/ViewModels/BigPictureViewModel.cs
+++ b/Correlator/ViewModels/BigPictureViewModel.cs
@@ -1,5 +1,4 @@
 using System;
-using System.IO;
 using System.Windows.Media.Imaging;
 using Prism.Commands;
 using Prism.Mvvm;
@@ -9,15 +8,15 @@
 {
     public class BigPictureViewModel : BindableBase, IDialogAware
     {
-        public string Title { get; private set; } = string.Empty;
-        private BitmapFrame _bigImageFrame;
+        public string Title => string.Empty;
+        private BitmapImage _bigPictureBitmapImage;
 
-        public BitmapFrame BigImageFrame
+        public BitmapImage BigPictureBitmapImage
         {
-            get => _bigImageFrame;
+            get => _bigPictureBitmapImage;
             set
             {
-                _bigImageFrame = value;
+                _bigPictureBitmapImage = value;
                 RaisePropertyChanged();
             }
         }
@@ -47,21 +46,7 @@
         public void OnDialogOpened(IDialogParameters parameters)
         {
             var imageFullPath = parameters.GetValue<string>("ImageFullPath");
-
-            //解决图片打开然后关闭之后，显示文件被占用无法删除的问题
-            using (var reader = new BinaryReader(File.Open(imageFullPath, FileMode.Open)))
-            {
-                var fi = new FileInfo(imageFullPath);
-                var bytes = reader.ReadBytes((int)fi.Length);
-                reader.Close();
-
-                var bitmapImage = new BitmapImage();
-                bitmapImage.BeginInit();
-                bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
-                bitmapImage.StreamSource = new MemoryStream(bytes);
-                bitmapImage.EndInit();
-                BigImageFrame = BitmapFrame.Create(bitmapImage);
-            }
+            BigPictureBitmapImage = new BitmapImage(new Uri(imageFullPath, UriKind.Absolute));
         }
     }
 }
\ No newline at end of file
diff --git a/Correlator/Views/BigPictureView.xaml b/Correlator/Views/BigPictureView.xaml
index 9ef1f9a..530cfe0 100644
--- a/Correlator/Views/BigPictureView.xaml
+++ b/Correlator/Views/BigPictureView.xaml
@@ -18,24 +18,32 @@
             <Setter Property="ShowInTaskbar" Value="False" />
             <Setter Property="WindowStyle" Value="None" />
             <Setter Property="WindowState" Value="Maximized" />
-            <Setter Property="AllowsTransparency" Value="True" />
             <Setter Property="ResizeMode" Value="NoResize" />
         </Style>
     </prism:Dialog.WindowStyle>
 
     <Grid>
-        <hc:ImageViewer Background="{DynamicResource SecondaryRegionBrush}" ImageSource="{Binding BigImageFrame}" />
+        <Image Source="{Binding BigPictureBitmapImage}" />
 
         <Button
             Width="95"
             Height="90"
-            Margin="0,0,10,10"
+            Margin="0,0,11,11"
+            Padding="11"
             HorizontalAlignment="Right"
             VerticalAlignment="Bottom"
-            Background="Transparent"
+            HorizontalContentAlignment="Right"
+            VerticalContentAlignment="Bottom"
+            hc:BackgroundSwitchElement.MouseDownBackground="{DynamicResource DarkDangerBrush}"
+            hc:BackgroundSwitchElement.MouseHoverBackground="{DynamicResource DangerBrush}"
+            hc:BorderElement.CornerRadius="90 0 0 0"
+            Background="LightGray"
             BorderThickness="0"
-            Command="{Binding CloseWindowCommand}">
-            <Image Source="/Correlator;component/Image/close3.png" />
-        </Button>
+            Command="{Binding CloseWindowCommand}"
+            Content="&#xe668;"
+            FontFamily="/Correlator;component/Fonts/#iconfont"
+            FontSize="50"
+            Foreground="White"
+            Style="{StaticResource ButtonCustom}" />
     </Grid>
 </UserControl>
\ No newline at end of file