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我有一个TextBlock我需要自动调整为 a 的宽度TreeView。theTreeView和 theTextBlock都包含在 a 中StackPanel。是在StackPanel一个Expander. 的宽度TreeView应该驱动其他对象的宽度，我需要改变的高度TextBlock来显示全文。我所有的努力都导致TextBlock了宽度的增加。谢谢！

       <Expander IsEnabled="True" HorizontalAlignment="Right" Margin="0,8,8,53" x:Name="ExpanderBookMarks" Width="Auto" Foreground="#FF625B5B" ExpandDirection="Down" IsExpanded="True" Header="Bookmarks" Visibility="Hidden">

        <StackPanel Name ="StackPanelBookmark" Orientation="Vertical" Width="{wpf:Binding Path=Width, ElementName=trvBookmarks, Mode=Default}">

            <TreeView x:Name="trvBookmarks" ItemsSource="{Binding}" 
              ItemTemplateSelector="{StaticResource BookmarkTemplateSelector}" 
              Margin="0,0,0,0" 
              TreeViewItem.Selected="HandleTreeViewItemClick" AllowDrop="True"/>

            <TextBlock x:Name="TextBlockBookmarkDiscription" TextWrapping="Wrap" Foreground="AntiqueWhite" Background="Transparent" Width="150">
                This is the discription area and needs to be very long because the end user can put 400 charectors in.                    
            </TextBlock>

        </StackPanel>

        <!--End of Dougs Treeview-->

    </Expander>
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1 回答 1

18

试试这个：

<TextBlock Width="{Binding ElementName=trvBookmarks,Path=ActualWidth}" ... />
于 2008-12-19T18:02:06.067 回答