diff --git a/Extensions/AIStudio.Wpf.Mind/Controls/MindToolBoxControl.xaml b/Extensions/AIStudio.Wpf.Mind/Controls/MindToolBoxControl.xaml
index 757f31a..c608fbe 100644
--- a/Extensions/AIStudio.Wpf.Mind/Controls/MindToolBoxControl.xaml
+++ b/Extensions/AIStudio.Wpf.Mind/Controls/MindToolBoxControl.xaml
@@ -391,8 +391,8 @@
                                     <ColumnDefinition Width="Auto"/>
                                 </Grid.ColumnDefinitions>
                                 <TextBox x:Name="txtTag" VerticalContentAlignment="Center" BorderThickness="0" Background="Transparent"/>
-                                <Line X1="0" Y1="0" X2="0" Y2="100" Stroke="Gray"  StrokeThickness="0.5" HorizontalAlignment="Right"></Line>   
-                                <Button Grid.Column="1" Content="添加" Padding="6,0" Style="{StaticResource AIStudio.Mind.Styles.Button.Flat}"  Command="{Binding AddTagCommand}" CommandParameter="{Binding ElementName=txtTag,Path=Text}"/>
+                                <Line X1="0" Y1="0" X2="0" Y2="100" Stroke="Gray"  StrokeThickness="0.5" HorizontalAlignment="Right"></Line>
+                                <Button Grid.Column="1" Content="添加" Padding="6,0" Style="{StaticResource AIStudio.Mind.Styles.Button.Flat}"  Command="{Binding DataContext.AddTagCommand}" CommandParameter="{Binding ElementName=txtTag,Path=Text}"/>
                                 <Line X1="0" Y1="0" X2="150" Y2="0" Stroke="Gray"  StrokeThickness="0.5" VerticalAlignment="Bottom" Grid.ColumnSpan="2"></Line>
                                 <controls:TagControl Grid.Row="1" Grid.ColumnSpan="2" BorderBrush="Gray"  HorizontalAlignment="Left" ItemsSource="{Binding SelectedItem.Tags}" Width="150">
                                     <controls:TagControl.ItemTemplate>