diff --git a/AIStudio.Wpf.Diagram.sln b/AIStudio.Wpf.Diagram.sln
index 3d98351..10ecfc6 100644
--- a/AIStudio.Wpf.Diagram.sln
+++ b/AIStudio.Wpf.Diagram.sln
@@ -19,6 +19,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "解决方案项", "解决
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
 		Directory.Build.Props = Directory.Build.Props
+		test-zzp.txt = test-zzp.txt
 	EndProjectSection
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{2BE1891E-16C9-4191-998A-45AEEEEA1F0D}"
diff --git a/AIStudio.Wpf.DiagramDesigner/UserControls/DiagramControl.xaml b/AIStudio.Wpf.DiagramDesigner/UserControls/DiagramControl.xaml
index f9ddc64..0f54b5c 100644
--- a/AIStudio.Wpf.DiagramDesigner/UserControls/DiagramControl.xaml
+++ b/AIStudio.Wpf.DiagramDesigner/UserControls/DiagramControl.xaml
@@ -265,6 +265,30 @@
                         VerticalAlignment="Bottom"
                         HorizontalAlignment="Left"
                         Visibility="{Binding Path=ShowConnectors, Converter={x:Static dd:BoolToVisibilityConverter.Instance}}" />
+                    <Button Margin="-30"  Background="Transparent"    BorderThickness="0"                
+                        VerticalAlignment="Center"
+                        HorizontalAlignment="Left"
+                        Visibility="{Binding Path=ShowConnectors, Converter={x:Static dd:BoolToVisibilityConverter.Instance}}" >
+                        <TextBlock Text="✚" FontWeight="Bold" FontSize="16" Foreground="DarkGray" />
+                    </Button>
+                    <Button Margin="-30"  Background="Transparent"    BorderThickness="0"                
+                        VerticalAlignment="Center"
+                        HorizontalAlignment="Right"
+                        Visibility="{Binding Path=ShowConnectors, Converter={x:Static dd:BoolToVisibilityConverter.Instance}}" >
+                        <TextBlock Text="✚" FontWeight="Bold" FontSize="16" Foreground="DarkGray" />
+                    </Button>
+                    <Button Margin="-30"  Background="Transparent"    BorderThickness="0"                
+                        VerticalAlignment="Top"
+                        HorizontalAlignment="Center"
+                        Visibility="{Binding Path=ShowConnectors, Converter={x:Static dd:BoolToVisibilityConverter.Instance}}" >
+                        <TextBlock Text="✚" FontWeight="Bold" FontSize="16" Foreground="DarkGray" />
+                    </Button>
+                    <Button Margin="-30"  Background="Transparent"    BorderThickness="0"                
+                        VerticalAlignment="Bottom"
+                        HorizontalAlignment="Center"
+                        Visibility="{Binding Path=ShowConnectors, Converter={x:Static dd:BoolToVisibilityConverter.Instance}}" >
+                        <TextBlock Text="✚" FontWeight="Bold" FontSize="16" Foreground="DarkGray" />
+                    </Button>
                 </Grid>
             </ControlTemplate>
 
@@ -334,6 +358,7 @@
                                 </c:DragThumb>
 
                                 <Grid RenderTransformOrigin="0.5,0.5">
+
                                     <!-- PART_ResizeDecorator -->
                                     <Control x:Name="PART_ResizeDecorator"
                                                  Visibility="Collapsed"
@@ -391,13 +416,14 @@
 
                                     <!-- PART_ConnectorDecorator -->
                                     <Control x:Name="PART_ConnectorDecorator" Template="{StaticResource ConnectorDecoratorTemplate}"/>
-
+                   
                                     <Grid.RenderTransform>
                                         <TransformGroup>
                                             <RotateTransform Angle="{Binding Angle}" />
                                             <ScaleTransform x:Name="scale" ScaleX="{Binding ScaleX}" ScaleY="{Binding ScaleY}"></ScaleTransform>
                                         </TransformGroup>
                                     </Grid.RenderTransform>
+
                                 </Grid>
                             </Grid>
                             <DataTemplate.Triggers>