Question

我有一些具有各种集合属性的对象，我在ListBox中使用DataTemplate为ItemTemplate显示。在该DataTemplate中是一个TreeView，它将各种属性显示为根TreeViewItem的TreeViewItem子节点，它们表示ListBoxItem中显示的项目。我的问题是：ListBoxItems具有DataTemplate中完全展开的TreeView的垂直大小。有没有办法改变这个，以便ListBoxItems可能具有最小尺寸？

我的XAML：

<ListBox x:Name="ShackList" ItemsSource="{Binding}" ToolTip="Right click for options" SelectionMode="Single">
  <ListBox.ItemTemplate>
    <DataTemplate DataType="{x:Type model:ShackConfigurationRepository}">
      <TreeView BorderThickness="0" Margin="0">
        <TreeView.Resources>
          <Style x:Key="deviceRepoNodeStyle" TargetType="{x:Type TreeViewItem}">
            <Setter Property="Margin" Value="3"/>
            <Setter Property="ContextMenu" Value="{StaticResource deviceTypeTreeViewItemContextMenu}"/>
          </Style>
        </TreeView.Resources>
        <TreeViewItem>
          <TreeViewItem.Header>
            <StackPanel Orientation="Horizontal">
              <Image Source="Resources/Shack_64x64_72.png" Height="24" Width="24"/>
              <TextBlock VerticalAlignment="Center" Margin="5,0,0,0" Text="{Binding Path=ShackName}" />
            </StackPanel>
          </TreeViewItem.Header>
          <!-- 
          The 'Tag' attribute of the following TreeViewItems is a value of
          DeviceType used to control which collection gets set as the content
          of the device list.
          -->
          <TreeViewItem Header="Pendants" Tag="PENDANT"     Selected="ShackDevice_Selected" DataContext="{Binding}" Style="{StaticResource deviceRepoNodeStyle}" PreviewMouseRightButtonDown="DeviceTreeNode_PreviewMouseRightButtonDown"/>
          <TreeViewItem Header="Oscillators" Tag="OSCILLATOR"   Selected="ShackDevice_Selected" DataContext="{Binding}" Style="{StaticResource deviceRepoNodeStyle}" PreviewMouseRightButtonDown="DeviceTreeNode_PreviewMouseRightButtonDown"/>
          <TreeViewItem Header="Thru-Arc-Tracking" Tag="TAT"    Selected="ShackDevice_Selected" DataContext="{Binding}" Style="{StaticResource deviceRepoNodeStyle}" PreviewMouseRightButtonDown="DeviceTreeNode_PreviewMouseRightButtonDown"/>
          <TreeViewItem Header="Travel" Tag="TRAVEL"            Selected="ShackDevice_Selected" DataContext="{Binding}" Style="{StaticResource deviceRepoNodeStyle}" PreviewMouseRightButtonDown="DeviceTreeNode_PreviewMouseRightButtonDown"/>
        </TreeViewItem>
      </TreeView>
    </DataTemplate>
  </ListBox.ItemTemplate>
</ListBox>

Answer 1

我在窗口资源中定义了一个ScrollViewer样式，它定义了窗口中所有ScrollViewers的最小高度和宽度，我没有意识到ListBoxItems在内部使用ScrollViewers。

WPF TreeView在根root崩溃时不会折叠其以前使用过的空间

1 个答案: