c# - ItemSsource设置为用户控件的ObservableCollection的ItemsControl无法在可视树中呈现

在TestEntryView.xaml.cs中

public partial class TestEntryView : UserControl
{
    public ObservableCollection<TestFieldView> Fields {get;set;}
    ...
}

其中TestFieldView是一个UserControl。

<UserControl x:Class="STS2Editor.View.TestEntryView"
         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:vw="clr-namespace:STS2Editor.View"
         mc:Ignorable="d"
         x:Name="testEntryView"
         d:DesignHeight="300"
         d:DesignWidth="427"
         d:DataContext="{Binding TestEntry, Source={StaticResource Sample}}">
<Grid Background="{DynamicResource ButtonNormalBorder}" TextElement.Foreground="{DynamicResource TextBrush}">
    <Border Background="{DynamicResource ControlBackgroundBrush}" BorderBrush="{DynamicResource ControlBackgroundBrush}" BorderThickness="4" CornerRadius="16">

        <Grid Margin="4" >
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>
            <ScrollViewer Background="{DynamicResource ControlBackgroundBrush}" Grid.IsSharedSizeScope="True" Grid.Row="1">
                <ItemsControl x:Name="fieldList" ItemsSource="{Binding Fields, ElementName=testEntryView}"/>
            </ScrollViewer>
        </Grid>
    </Border>
</Grid>

绑定是正确的，但是当我窥视视觉树时，我的所有子项都由边框和内容呈现器组成，没有子视觉。

最佳答案

如果由于某种原因未在您的UserControl（TestFieldView）上调用LoadComponent并且Xaml无法正确解析，我只能重新创建您的情况。这在InitializeComponent中发生（例如，参见What does InitializeComponent() do, and how does it work in WPF?）。您确定在TestFieldView的构造函数中调用它吗？