enhance: optimized ListBox style

src/Shared/HandyControlDemo_Shared/Resources/Themes/Styles/Style.xaml

@@ -42,7 +42,6 @@
 
     <Style x:Key="ListBoxItemTransparent" BasedOn="{StaticResource ListBoxItemBaseStyle}" TargetType="ListBoxItem">
         <Setter Property="Visibility" Value="{Binding IsVisible,Converter={StaticResource Boolean2VisibilityConverter}}"/>
-        <Setter Property="hc:BorderElement.CornerRadius" Value="4"/>
         <Setter Property="Background" Value="Transparent"/>
     </Style>
 
@@ -79,6 +78,7 @@
     </Style>
 
     <Style x:Key="ListBoxTransparent" BasedOn="{StaticResource ListBoxBaseStyle}" TargetType="ListBox">
+        <Setter Property="hc:BorderElement.CornerRadius" Value="4"/>
         <Setter Property="Background" Value="Transparent"/>
         <Setter Property="ItemContainerStyle" Value="{StaticResource ListBoxItemTransparent}"/>
     </Style>

src/Shared/HandyControlDemo_Shared/UserControl/Styles/ListBoxDemoCtl.xaml

@@ -12,7 +12,7 @@
                     </DataTemplate>
                 </ListBox.ItemTemplate>
             </ListBox>
-            <ListBox Margin="16" Width="200" ItemsSource="{Binding DataList}" Style="{StaticResource ListBox.Small}">
+            <ListBox Margin="16" Width="200" ItemsSource="{Binding DataList}" Style="{StaticResource ListBox.Small}" hc:BorderElement.CornerRadius="4">
                 <ListBox.ItemTemplate>
                     <DataTemplate>
                         <TextBlock Text="{Binding Name}"/>