整体调整了功能

FATrace.WPLApp/Views/MainView.xaml

@@ -23,9 +23,8 @@
             <Setter Property="Header" Value="{Binding Name}" />
             <Setter Property="CommandParameter" Value="{Binding CmdPar}" />
             <Setter Property="FontSize" Value="18" />
-            <Setter Property="IsExpanded" Value="True" />
             <Setter Property="Command" Value="{Binding DataContext.OpenCommand, RelativeSource={RelativeSource AncestorType=syncfusion:SfNavigationDrawer}}" />
-            <Setter Property="ItemsSource" Value="{Binding ChildrenNavItemDtos}" />
+            <Setter Property="ItemsSource" Value="{x:Null}" />
             <Setter Property="IconTemplate">
                 <Setter.Value>
                     <!--  Text="{Binding RelativeSource={RelativeSource AncestorType=syncfusion:NavigationItem}, Path=DataContext.Icon}" 给子节点展示图标用  -->
@@ -39,6 +38,12 @@
                     </DataTemplate>
                 </Setter.Value>
             </Setter>
+            <Style.Triggers>
+                <DataTrigger Binding="{Binding IsParent}" Value="True">
+                    <Setter Property="ItemsSource" Value="{Binding ChildrenNavItemDtos}" />
+                    <Setter Property="IsExpanded" Value="True" />
+                </DataTrigger>
+            </Style.Triggers>
             <!--<Setter Property="Icon">
                 <Setter.Value>
                     <TextBlock
@@ -103,15 +108,6 @@
             </syncfusion:SfNavigationDrawer.FooterItems>
 
             <!--  内容  -->
-
-            <!--<syncfusion:SfNavigationDrawer.ContentView>
-                <Grid x:Name="contentViewGrid">
-                    <Grid.RowDefinitions>
-                        <RowDefinition Height="Auto" />
-                        <RowDefinition />
-                    </Grid.RowDefinitions>
-
-            -->
             <!--  上方状态栏 - 用户登录信息  -->
             <!--
                     <Border