diff --git a/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj b/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
index ddfbf73d..81d86893 100644
--- a/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
+++ b/src/Net_40/HandyControlDemo_Net_40/HandyControlDemo_Net_40.csproj
@@ -49,6 +49,9 @@
     <Resource Include="..\..\Shared\HandyControlDemo_Shared\Data\DemoInfo.json">
       <Link>Data\DemoInfo.json</Link>
     </Resource>
+    <Resource Include="..\..\Shared\HandyControlDemo_Shared\Resources\Img\chrome_dragon.png">
+      <Link>Resources\Img\chrome_dragon.png</Link>
+    </Resource>
     <Resource Include="..\..\Shared\HandyControlDemo_Shared\Resources\Img\Cover.png">
       <Link>Resources\Img\Cover.png</Link>
     </Resource>
diff --git a/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj b/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
index 388d0a20..a4a7980a 100644
--- a/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
+++ b/src/Net_GE45/HandyControlDemo_Net_GE45/HandyControlDemo_Net_GE45.csproj
@@ -49,6 +49,9 @@
     <Resource Include="..\..\Shared\HandyControlDemo_Shared\Data\DemoInfo.json">
       <Link>Data\DemoInfo.json</Link>
     </Resource>
+    <Resource Include="..\..\Shared\HandyControlDemo_Shared\Resources\Img\chrome_dragon.png">
+      <Link>Resources\Img\chrome_dragon.png</Link>
+    </Resource>
     <Resource Include="..\..\Shared\HandyControlDemo_Shared\Resources\Img\Cover.png">
       <Link>Resources\Img\Cover.png</Link>
     </Resource>
diff --git a/src/Shared/HandyControlDemo_Shared/Resources/Img/chrome_dragon.png b/src/Shared/HandyControlDemo_Shared/Resources/Img/chrome_dragon.png
new file mode 100644
index 00000000..13138987
Binary files /dev/null and b/src/Shared/HandyControlDemo_Shared/Resources/Img/chrome_dragon.png differ
diff --git a/src/Shared/HandyControlDemo_Shared/Service/Data/DataService.cs b/src/Shared/HandyControlDemo_Shared/Service/Data/DataService.cs
index 796d6291..76c84413 100644
--- a/src/Shared/HandyControlDemo_Shared/Service/Data/DataService.cs
+++ b/src/Shared/HandyControlDemo_Shared/Service/Data/DataService.cs
@@ -129,10 +129,11 @@ namespace HandyControlDemo.Service
                     Link = item.html_url
                 }));
             }
-            catch
+            catch(Exception e)
             {
-                // ignored
+                HandyControl.Controls.MessageBox.Error(e.Message, Lang.Error);
             }
+
             return list;
         }
 
@@ -180,7 +181,7 @@ namespace HandyControlDemo.Service
                 new AvatarModel
                 {
                     DisplayName = "AutumnBox",
-                    AvatarUri = "https://www.atmb.top/images/leaves.png",
+                    AvatarUri = "https://raw.githubusercontent.com/zsh2401/AutumnBox/master/src/AutumnBox.GUI/Resources/Images/icon.png",
                     Link = "https://github.com/zsh2401/AutumnBox"
                 }
             };
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Basic/Avatar.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Basic/Avatar.xaml
index d1770751..298cfa5f 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Basic/Avatar.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Basic/Avatar.xaml
@@ -15,7 +15,7 @@
                     <RowDefinition/>
                     <RowDefinition Height="Auto"/>
                 </Grid.RowDefinitions>
-                <Image Source="{Binding Source,RelativeSource={RelativeSource AncestorType=UserControl}}" Height="120" Width="120" Stretch="Uniform" Margin="10"/>
+                <Image hc:ImageAttach.SourceFailed="/Resources/Img/chrome_dragon.png" Source="{Binding Source,RelativeSource={RelativeSource AncestorType=UserControl}}" Height="120" Width="120" Stretch="Uniform" Margin="10"/>
                 <TextBlock TextTrimming="CharacterEllipsis" TextWrapping="NoWrap" Margin="0,0,0,10" Grid.Row="1" Style="{StaticResource TextBlockDefault}" Text="{Binding DisplayName,RelativeSource={RelativeSource AncestorType=UserControl}}"/>
             </Grid>
         </Border>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Controls/OutlineTextDemoCtl.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Controls/OutlineTextDemoCtl.xaml
index 44967833..1d93bf32 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Controls/OutlineTextDemoCtl.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Controls/OutlineTextDemoCtl.xaml
@@ -10,7 +10,7 @@
             <hc:OutlineText TextWrapping="Wrap" Fill="{DynamicResource PrimaryTextBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=20}"/>
             <hc:OutlineText Margin="0,10,0,0" FontSize="30" Fill="{DynamicResource SuccessBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=8}"/>
             <hc:OutlineText Margin="0,10,0,0" Fill="{DynamicResource PrimaryTextBrush}" FontSize="30" FontStyle="Italic" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=8}"/>
-            <hc:OutlineText Margin="0,10,0,0" TextWrapping="Wrap" TextTrimming="CharacterEllipsis" FontSize="50" StrokeThickness="2" Fill="{DynamicResource DangerBrush}" Stroke="{DynamicResource PrimaryBrush}" Text="ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=5}"/>
+            <hc:OutlineText Margin="0,10,0,0" TextWrapping="Wrap" TextTrimming="CharacterEllipsis" FontSize="50" StrokeThickness="2" Fill="{DynamicResource DangerBrush}" Stroke="{DynamicResource PrimaryBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=5}"/>
             <hc:OutlineText Margin="0,10,0,0" FontSize="80" FontWeight="Bold" StrokeThickness="4" Fill="{DynamicResource PrimaryBrush}" Stroke="{DynamicResource DangerBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=2}"/>
             <hc:OutlineText Margin="0,10,0,0" StrokePosition="Outside" FontSize="80" FontWeight="Bold" StrokeThickness="4" Fill="{DynamicResource PrimaryBrush}" Stroke="{DynamicResource DangerBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=2}"/>
             <hc:OutlineText Margin="0,10,0,0" StrokePosition="InSide" FontSize="80" FontWeight="Bold" StrokeThickness="4" Fill="{DynamicResource PrimaryBrush}" Stroke="{DynamicResource DangerBrush}" Text="{ex:Lang Key={x:Static langs:LangKeys.Text}, Converter={StaticResource StringRepeatConverter}, ConverterParameter=2}"/>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/BlogsView.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/BlogsView.xaml
index d7f0e5dc..b93f7c84 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/BlogsView.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/BlogsView.xaml
@@ -5,7 +5,7 @@
              xmlns:hc="https://handyorg.github.io/handycontrol"
              DataContext="{Binding BlogsView,Source={StaticResource Locator}}"
              Background="{DynamicResource SecondaryRegionBrush}">
-    <hc:Watermark Mark="Blog" FontSize="80" MarkMargin="30,0">
+    <hc:Watermark Mark="Blog" FontSize="80" FontWeight="Bold" MarkMargin="30,0">
         <ListBox Background="Transparent" ItemContainerStyle="{StaticResource ListBoxItemCustom}" BorderThickness="0" ItemsSource="{Binding DataList}" ItemsPanel="{StaticResource FluidMoveBehaviorWrapPanelItemsPanelTemplate}">
             <ListBox.ItemTemplate>
                 <DataTemplate>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/ContributorsView.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/ContributorsView.xaml
index 8f807024..ce04cde7 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/ContributorsView.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/ContributorsView.xaml
@@ -5,13 +5,20 @@
              xmlns:hc="https://handyorg.github.io/handycontrol"
              DataContext="{Binding ContributorsView,Source={StaticResource Locator}}"
              Background="{DynamicResource SecondaryRegionBrush}">
-    <hc:Watermark Mark="{StaticResource GitHubStrGeometry}" MarkMargin="30,0" MarkWidth="200" MarkHeight="100">
-        <ListBox Background="Transparent" ItemContainerStyle="{StaticResource ListBoxItemCustom}" BorderThickness="0" ItemsSource="{Binding DataList}" ItemsPanel="{StaticResource FluidMoveBehaviorWrapPanelItemsPanelTemplate}">
-            <ListBox.ItemTemplate>
-                <DataTemplate>
-                    <userControl:Avatar DisplayName="{Binding DisplayName}" Link="{Binding Link}" Source="{Binding AvatarUri}"/>
-                </DataTemplate>
-            </ListBox.ItemTemplate>
-        </ListBox>
+    <hc:Watermark FontWeight="Bold" Mark="{StaticResource GitHubStrGeometry}" MarkMargin="30,0" MarkWidth="200" MarkHeight="100">
+        <hc:ToggleBlock IsChecked="{Binding DataGot}" VerticalContentAlignment="Stretch" HorizontalContentAlignment="Stretch">
+            <hc:ToggleBlock.UnCheckedContent>
+                <hc:LoadingCircle IsRunning="{Binding DataGot,Converter={StaticResource Boolean2BooleanReConverter}}"/>
+            </hc:ToggleBlock.UnCheckedContent>
+            <hc:ToggleBlock.CheckedContent>
+                <ListBox Background="Transparent" ItemContainerStyle="{StaticResource ListBoxItemCustom}" BorderThickness="0" ItemsSource="{Binding DataList}" ItemsPanel="{StaticResource FluidMoveBehaviorWrapPanelItemsPanelTemplate}">
+                    <ListBox.ItemTemplate>
+                        <DataTemplate>
+                            <userControl:Avatar DisplayName="{Binding DisplayName}" Link="{Binding Link}" Source="{Binding AvatarUri}"/>
+                        </DataTemplate>
+                    </ListBox.ItemTemplate>
+                </ListBox>
+            </hc:ToggleBlock.CheckedContent>
+        </hc:ToggleBlock>
     </hc:Watermark>
 </UserControl>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml
index ec22dcf1..a6bcea3a 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/LeftMainContent.xaml
@@ -6,7 +6,7 @@
         xmlns:langs="clr-namespace:HandyControlDemo.Properties.Langs"
         xmlns:ex="clr-namespace:HandyControlDemo.Tools.Extension"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-        Margin="16"
+        Margin="16,16,0,16"
         CornerRadius="10"
         Effect="{StaticResource EffectShadow4}">
     <Border.Resources>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml
index c3dc3cbb..95f13a98 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml
@@ -2,23 +2,28 @@
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:hc="https://handyorg.github.io/handycontrol"
         x:Class="HandyControlDemo.UserControl.MainContent">
-    <Grid Name="GridMain" MinHeight="300" MinWidth="200" HorizontalAlignment="Center" VerticalAlignment="Center" Margin="16">
-        <Grid.RowDefinitions>
-            <RowDefinition Height="Auto"/>
-            <RowDefinition/>
-        </Grid.RowDefinitions>
-        <Border Name="BorderEffect" Grid.RowSpan="2" Background="{DynamicResource RegionBrush}" CornerRadius="10" Effect="{StaticResource EffectShadow4}"/>
-        <Border Height="32" Name="BorderTitle" Grid.Row="0" CornerRadius="10,10,0,0" Background="{DynamicResource TitleBrush}">
-            <hc:SimplePanel>
-                <TextBlock Style="{StaticResource TextBlockDefault}" Foreground="White" Text="{Binding ContentTitle}"/>
-                <ToggleButton Margin="0,0,6,0" IsChecked="{Binding IsOpen,ElementName=DrawerCode}" Padding="5" Foreground="{DynamicResource TextIconBrush}" Style="{StaticResource ToggleButtonIconTransparent}" HorizontalAlignment="Right" hc:IconElement.Geometry="{StaticResource CodeGeometry}"/>
-                <hc:Drawer Name="DrawerCode" Opened="DrawerCode_OnOpened">
-                    <Border Style="{StaticResource BorderClip}" Margin="32,32,0,32" CornerRadius="10,0,0,10" Background="{DynamicResource RegionBrush}" Width="800" Name="BorderCode"/>
-                </hc:Drawer>
-            </hc:SimplePanel>
+    <hc:SimplePanel>
+        <Border Name="BorderRootEffect" Background="{DynamicResource RegionBrush}" CornerRadius="10" Effect="{StaticResource EffectShadow4}" Margin="16" Visibility="Collapsed"/>
+        <Border Name="BorderRoot" Style="{StaticResource BorderClip}" Margin="16">
+            <Grid Name="GridMain" MinHeight="300" MinWidth="200" HorizontalAlignment="Center" VerticalAlignment="Center">
+                <Grid.RowDefinitions>
+                    <RowDefinition Height="Auto"/>
+                    <RowDefinition/>
+                </Grid.RowDefinitions>
+                <Border Name="BorderEffect" Grid.RowSpan="2" Background="{DynamicResource RegionBrush}" CornerRadius="10" Effect="{StaticResource EffectShadow4}"/>
+                <Border Height="32" Name="BorderTitle" Grid.Row="0" CornerRadius="10,10,0,0" Background="{DynamicResource TitleBrush}">
+                    <hc:SimplePanel>
+                        <TextBlock Style="{StaticResource TextBlockDefault}" Foreground="White" Text="{Binding ContentTitle}"/>
+                        <ToggleButton Margin="0,0,6,0" IsChecked="{Binding IsOpen,ElementName=DrawerCode}" Padding="5" Foreground="{DynamicResource TextIconBrush}" Style="{StaticResource ToggleButtonIconTransparent}" HorizontalAlignment="Right" hc:IconElement.Geometry="{StaticResource CodeGeometry}"/>
+                        <hc:Drawer Name="DrawerCode" Opened="DrawerCode_OnOpened">
+                            <Border Style="{StaticResource BorderClip}" Margin="32,32,0,32" CornerRadius="10,0,0,10" Background="{DynamicResource RegionBrush}" Width="800" Name="BorderCode"/>
+                        </hc:Drawer>
+                    </hc:SimplePanel>
+                </Border>
+                <Border Grid.Row="1" ClipToBounds="True">
+                    <ContentPresenter Name="PresenterMain" Margin="0,0,0,10" Content="{Binding SubContent}"/>
+                </Border>
+            </Grid>
         </Border>
-        <Border Grid.Row="1" ClipToBounds="True">
-            <ContentPresenter Name="PresenterMain" Margin="0,0,0,10" Content="{Binding SubContent}"/>
-        </Border>
-    </Grid>
+    </hc:SimplePanel>
 </Border>
\ No newline at end of file
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml.cs b/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml.cs
index 091e204f..4cbd7947 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml.cs
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/MainContent.xaml.cs
@@ -38,21 +38,25 @@ namespace HandyControlDemo.UserControl
             _isFull = isFull;
             if (_isFull)
             {
+                BorderRootEffect.Show();
                 BorderEffect.Collapse();
                 BorderTitle.Collapse();
                 GridMain.HorizontalAlignment = HorizontalAlignment.Stretch;
                 GridMain.VerticalAlignment = VerticalAlignment.Stretch;
-                GridMain.Margin = new Thickness();
                 PresenterMain.Margin = new Thickness();
+                BorderRoot.CornerRadius = new CornerRadius(10);
+                BorderRoot.Style = ResourceHelper.GetResource<Style>("BorderClip");
             }
             else
             {
+                BorderRootEffect.Collapse();
                 BorderEffect.Show();
                 BorderTitle.Show();
                 GridMain.HorizontalAlignment = HorizontalAlignment.Center;
                 GridMain.VerticalAlignment = VerticalAlignment.Center;
-                GridMain.Margin = new Thickness(16);
                 PresenterMain.Margin = new Thickness(0, 0, 0, 10);
+                BorderRoot.CornerRadius = new CornerRadius();
+                BorderRoot.Style = null;
             }
         }
 
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/PracticalDemo.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/PracticalDemo.xaml
index fc59c697..076270c9 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/PracticalDemo.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/PracticalDemo.xaml
@@ -3,6 +3,8 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
              mc:Ignorable="d"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             xmlns:d="http://schemas.microsoft.com/expression/blend/2008">
-    
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+             xmlns:userControl="clr-namespace:HandyControlDemo.UserControl"
+             Background="{DynamicResource SecondaryRegionBrush}">
+    <userControl:UnderConstruction VerticalAlignment="Center" HorizontalAlignment="Center"/>
 </UserControl>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/ProjectsView.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/ProjectsView.xaml
index 8082f01c..c797fa79 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/ProjectsView.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/ProjectsView.xaml
@@ -5,7 +5,7 @@
              xmlns:hc="https://handyorg.github.io/handycontrol"
              DataContext="{Binding ProjectsView,Source={StaticResource Locator}}"
              Background="{DynamicResource SecondaryRegionBrush}">
-    <hc:Watermark Mark="Project" FontSize="80" MarkMargin="30,0">
+    <hc:Watermark Mark="Project" FontSize="80" FontWeight="Bold" MarkMargin="30,0">
         <ListBox Background="Transparent" ItemContainerStyle="{StaticResource ListBoxItemCustom}" BorderThickness="0" ItemsSource="{Binding DataList}" ItemsPanel="{StaticResource FluidMoveBehaviorWrapPanelItemsPanelTemplate}">
             <ListBox.ItemTemplate>
                 <DataTemplate>
diff --git a/src/Shared/HandyControlDemo_Shared/UserControl/Main/WebsitesView.xaml b/src/Shared/HandyControlDemo_Shared/UserControl/Main/WebsitesView.xaml
index 258f8597..4c5a49b2 100644
--- a/src/Shared/HandyControlDemo_Shared/UserControl/Main/WebsitesView.xaml
+++ b/src/Shared/HandyControlDemo_Shared/UserControl/Main/WebsitesView.xaml
@@ -5,7 +5,7 @@
              xmlns:hc="https://handyorg.github.io/handycontrol"
              DataContext="{Binding WebsitesView,Source={StaticResource Locator}}"
              Background="{DynamicResource SecondaryRegionBrush}">
-    <hc:Watermark Mark="Website" FontSize="80" MarkMargin="30,0">
+    <hc:Watermark Mark="Website" FontSize="80" FontWeight="Bold" MarkMargin="30,0">
         <ListBox Background="Transparent" ItemContainerStyle="{StaticResource ListBoxItemCustom}" BorderThickness="0" ItemsSource="{Binding DataList}" ItemsPanel="{StaticResource FluidMoveBehaviorWrapPanelItemsPanelTemplate}">
             <ListBox.ItemTemplate>
                 <DataTemplate>
diff --git a/src/Shared/HandyControlDemo_Shared/ViewModel/Main/ItemsDisplayViewModel.cs b/src/Shared/HandyControlDemo_Shared/ViewModel/Main/ItemsDisplayViewModel.cs
index 26f41e71..156c7d6c 100644
--- a/src/Shared/HandyControlDemo_Shared/ViewModel/Main/ItemsDisplayViewModel.cs
+++ b/src/Shared/HandyControlDemo_Shared/ViewModel/Main/ItemsDisplayViewModel.cs
@@ -7,12 +7,24 @@ namespace HandyControlDemo.ViewModel
 {
     public class ItemsDisplayViewModel : DemoViewModelBase<AvatarModel>
     {
-        public ItemsDisplayViewModel(Func<List<AvatarModel>> getDatAction)
+        public ItemsDisplayViewModel(Func<List<AvatarModel>> getDataAction)
         {
-#if NET40
-            Task.Factory.StartNew(() => DataList = getDatAction?.Invoke());
+#if !NET40
+            Task.Factory.StartNew(() => DataList = getDataAction?.Invoke()).ContinueWith(obj => DataGot = true);
 #else
-            Task.Run(() => DataList = getDatAction?.Invoke());
+            Task.Run(() => DataList = getDataAction?.Invoke()).ContinueWith(obj => DataGot = true);
+#endif
+        }
+
+        private bool _dataGot;
+
+        public bool DataGot
+        {
+            get => _dataGot;
+#if NET40
+            set => Set(nameof(DataGot), ref _dataGot, value);
+#else
+            set => Set(ref _dataGot, value);
 #endif
         }
     }
diff --git a/src/Shared/HandyControlDemo_Shared/ViewModel/Main/MainViewModel.cs b/src/Shared/HandyControlDemo_Shared/ViewModel/Main/MainViewModel.cs
index 043def39..d0e69953 100644
--- a/src/Shared/HandyControlDemo_Shared/ViewModel/Main/MainViewModel.cs
+++ b/src/Shared/HandyControlDemo_Shared/ViewModel/Main/MainViewModel.cs
@@ -176,8 +176,8 @@ namespace HandyControlDemo.ViewModel
         private void OpenPracticalDemo()
         {
             Messenger.Default.Send<object>(null, MessageToken.ClearLeftSelected);
-            Messenger.Default.Send(true, MessageToken.FullSwitch);
             Messenger.Default.Send(AssemblyHelper.CreateInternalInstance($"UserControl.{MessageToken.PracticalDemo}"), MessageToken.LoadShowContent);
+            Messenger.Default.Send(true, MessageToken.FullSwitch);
         }
 
         #endregion
diff --git a/src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs b/src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs
index 397d68b9..e1c1c49c 100644
--- a/src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs
+++ b/src/Shared/HandyControlDemo_Shared/ViewModel/ViewModelLocator.cs
@@ -19,7 +19,6 @@ namespace HandyControlDemo.ViewModel
             SimpleIoc.Default.Register<ImageBrowserDemoViewModel>();
             SimpleIoc.Default.Register<ComboBoxDemoViewModel>();
             SimpleIoc.Default.Register<WindowDemoViewModel>();
-            SimpleIoc.Default.Register(() => new ItemsDisplayViewModel(dataService.GetContributorDataList), "Contributors");
             SimpleIoc.Default.Register(() => new ItemsDisplayViewModel(dataService.GetBlogDataList), "Blogs");
             SimpleIoc.Default.Register(() => new ItemsDisplayViewModel(dataService.GetProjectDataList), "Projects");
             SimpleIoc.Default.Register(() => new ItemsDisplayViewModel(dataService.GetWebsiteDataList), "Websites");
@@ -58,7 +57,7 @@ namespace HandyControlDemo.ViewModel
 
         public WindowDemoViewModel WindowDemo => SimpleIoc.Default.GetInstance<WindowDemoViewModel>();
 
-        public ItemsDisplayViewModel ContributorsView => SimpleIoc.Default.GetInstance<ItemsDisplayViewModel>("Contributors");
+        public ItemsDisplayViewModel ContributorsView => new ItemsDisplayViewModel(SimpleIoc.Default.GetInstance<DataService>().GetContributorDataList);
 
         public ItemsDisplayViewModel BlogsView => SimpleIoc.Default.GetInstance<ItemsDisplayViewModel>("Blogs");
 
diff --git a/src/Shared/HandyControl_Shared/Controls/Attach/ImageAttach.cs b/src/Shared/HandyControl_Shared/Controls/Attach/ImageAttach.cs
new file mode 100644
index 00000000..0e6582ca
--- /dev/null
+++ b/src/Shared/HandyControl_Shared/Controls/Attach/ImageAttach.cs
@@ -0,0 +1,42 @@
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Media;
+
+namespace HandyControl.Controls
+{
+    public class ImageAttach
+    {
+        public static readonly DependencyProperty SourceFailedProperty = DependencyProperty.RegisterAttached(
+            "SourceFailed", typeof(ImageSource), typeof(ImageAttach), new FrameworkPropertyMetadata(default(ImageSource), FrameworkPropertyMetadataOptions.Inherits, OnSourceFailedChanged));
+
+        private static void OnSourceFailedChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
+        {
+            if (d is Image image)
+            {
+                if (e.NewValue is ImageSource)
+                {
+                    image.ImageFailed += Image_ImageFailed;
+                }
+                else
+                {
+                    image.ImageFailed -= Image_ImageFailed;
+                }
+            }
+        }
+
+        private static void Image_ImageFailed(object sender, ExceptionRoutedEventArgs e)
+        {
+            if (sender is Image image)
+            {
+                image.SetCurrentValue(Image.SourceProperty, GetSourceFailed(image));
+                image.ImageFailed -= Image_ImageFailed;
+            }
+        }
+
+        public static void SetSourceFailed(DependencyObject element, ImageSource value)
+            => element.SetValue(SourceFailedProperty, value);
+
+        public static ImageSource GetSourceFailed(DependencyObject element)
+            => (ImageSource) element.GetValue(SourceFailedProperty);
+    }
+}
diff --git a/src/Shared/HandyControl_Shared/Controls/Block/ToggleBlock.cs b/src/Shared/HandyControl_Shared/Controls/Block/ToggleBlock.cs
index 25876114..e6e85b50 100644
--- a/src/Shared/HandyControl_Shared/Controls/Block/ToggleBlock.cs
+++ b/src/Shared/HandyControl_Shared/Controls/Block/ToggleBlock.cs
@@ -8,9 +8,6 @@ namespace HandyControl.Controls
     /// <summary>
     ///     切换块
     /// </summary>
-    /// <remarks>
-    ///     在不需要命中测试的情况下可代替ToggleButton或CheckBox，以减少内存用量。
-    /// </remarks>
     public class ToggleBlock : Control
     {
         public static readonly DependencyProperty IsCheckedProperty = DependencyProperty.Register(
diff --git a/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems b/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
index e4d5908b..00d0d6cd 100644
--- a/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
+++ b/src/Shared/HandyControl_Shared/HandyControl_Shared.projitems
@@ -17,6 +17,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\EdgeElement.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\IconElement.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\IconSwitchElement.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\ImageAttach.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\InfoElement.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\MenuTopLineAttach.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Controls\Attach\PanelElement.cs" />
diff --git a/src/Shared/HandyControl_Shared/Themes/Styles/Base/ToggleBlockBaseStyle.xaml b/src/Shared/HandyControl_Shared/Themes/Styles/Base/ToggleBlockBaseStyle.xaml
index 536b8e40..e1bd614d 100644
--- a/src/Shared/HandyControl_Shared/Themes/Styles/Base/ToggleBlockBaseStyle.xaml
+++ b/src/Shared/HandyControl_Shared/Themes/Styles/Base/ToggleBlockBaseStyle.xaml
@@ -3,7 +3,6 @@
                     xmlns:controls="clr-namespace:HandyControl.Controls">
 
     <Style x:Key="ToggleBlockBaseStyle" TargetType="controls:ToggleBlock">
-        <Setter Property="IsHitTestVisible" Value="False"/>
         <Setter Property="VerticalContentAlignment" Value="Center"/>
         <Setter Property="HorizontalContentAlignment" Value="Center"/>
         <Setter Property="Template">
@@ -19,11 +18,17 @@
                     <ControlTemplate.Triggers>
                         <Trigger Property="IsChecked" Value="True">
                             <Setter TargetName="ContentPresenterChecked" Property="Visibility" Value="Visible"/>
+                            <Setter TargetName="ContentPresenterUnChecked" Property="Visibility" Value="Collapsed"/>
+                            <Setter TargetName="ContentPresenterIndeterminate" Property="Visibility" Value="Collapsed"/>
                         </Trigger>
                         <Trigger Property="IsChecked" Value="False">
+                            <Setter TargetName="ContentPresenterChecked" Property="Visibility" Value="Collapsed"/>
                             <Setter TargetName="ContentPresenterUnChecked" Property="Visibility" Value="Visible"/>
+                            <Setter TargetName="ContentPresenterIndeterminate" Property="Visibility" Value="Collapsed"/>
                         </Trigger>
                         <Trigger Property="IsChecked" Value="{x:Null}">
+                            <Setter TargetName="ContentPresenterChecked" Property="Visibility" Value="Collapsed"/>
+                            <Setter TargetName="ContentPresenterUnChecked" Property="Visibility" Value="Collapsed"/>
                             <Setter TargetName="ContentPresenterIndeterminate" Property="Visibility" Value="Visible"/>
                         </Trigger>
                     </ControlTemplate.Triggers>