aivfo-tl-3.0/aivfo-front-manament-2.0/ivf_tl_Manage/UserControls/MarkWeightTreeUserControl.xaml

<UserControl x:Class="ivf_tl_Manage.UserControls.MarkWeightTreeUserControl"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:ivf_tl_Manage.UserControls"
             mc:Ignorable="d" 
              FontFamily="{StaticResource sourceHan}"
 Width="1690" x:Name="_MarkWeightTreeUserControl">
    <Grid x:Name="root" Background="{Binding ElementName=_MarkWeightTreeUserControl,Path=BackgroundSource}">
        <Grid.RowDefinitions>
            <RowDefinition Height="56"/>
            <RowDefinition Height="auto"/>
        </Grid.RowDefinitions>
        <local:MarkWeightItemUserControl x:Name="test1" Grid.Row="0" ExpandedEvent="MarkWeightItemUserControl_ExpandedEvent" MarkWeightOperEvent="test1_MarkWeightOperEvent"
                                   MarkWeightSource="{Binding ElementName=_MarkWeightTreeUserControl,Path=MarkWeightSource}" 
                                   RectangleFill="{Binding ElementName=_MarkWeightTreeUserControl,Path=RectangleFill}"/>
        <ItemsControl Grid.Row="1" x:Name="items" Background="Transparent" FocusVisualStyle="{x:Null}" ItemsSource="{Binding ElementName=_MarkWeightTreeUserControl,Path=DetailItemSouce}">
            <ItemsControl.ItemTemplate>
                <DataTemplate>
                    <local:MarkWeightTreeUserControl MarkWeightSource="{Binding}" RectangleFill="{Binding RectangleFill}" MarkWeightOperTreeEvent="MarkWeightTreeUserControl_MarkWeightOperTreeEvent"/>
                </DataTemplate>
            </ItemsControl.ItemTemplate>
        </ItemsControl>
    </Grid>
</UserControl>