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我的用户范围内的项目没有更新
原标题:ItemsControl inside my UserControl is not updating

我对我的用户意见感到不安的是:

[ContentProperty("SetContent")]
public partial class HeaderContainer : UserControl
{
    // Header region

    public FrameworkElement SetContent
    {
        get { return (FrameworkElement)GetValue(SetContentProperty); }
        set { SetValue(SetContentProperty, value); }
    }

    public static readonly DependencyProperty SetContentProperty =
           DependencyProperty.Register("SetContent", typeof(FrameworkElement), 
                                       typeof(HeaderContainer), new PropertyMetadata(null));

    public HeaderContainer()
    {
        InitializeComponent();
        DataContext = this;
    }
}

这是我的XAML

<StackPanel>
    <Border>
        <TextBlock Text="{Binding Header}" />
    </Border>
    <ContentPresenter Content="{Binding SetContent}"/>
</StackPanel>

我的问题是:

<c:HeaderContainer Header="List">
  <ItemsControl ItemsSource="{Binding ObjectList}" >
    <ItemsControl.ItemTemplate>
      <DataTemplate>
         <StackPanel>
           <TextBlock Text="{Binding DisplayName}"/>
           <TextBlock Text="{Binding SecondLine}" Foreground="Gray" />
         </StackPanel>
       </DataTemplate>
     </ItemsControl.ItemTemplate>
   </ItemsControl>
 </c:HeaderContainer>

当我在XAML中增加内容时,项目控制本身也正在发挥作用。 问题在于,当我增列反对者的项目时,这个问题就没有发生。 我在什么地方认为错误?

最佳回答

很难在此确定确切的问题,因为你的法典不完整。 您拥有<代码>SetContent的扶养财产,然而,您的用法并不使用。 我认为,你的办法是分级<条码>。 继承财产。

Or ... just use the Silverlight Toolkit HeaderedContentControl which I think does exactly what you are trying to achieve!

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