如何使StackPanel的子级向下填充最大空间?
我只想在左侧输入文字,在右侧输入帮助框。 帮助框应一直延伸到底部。 如果取出StackPanel下面的外层,效果很好。 但是出于布局的原因(我正在动态插入UserControls),我需要包装StackPanel。 如您所见,我如何将GroupBox其扩展到的底部StackPanel: VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" Height="Auto" XAML: <Window x:Class="TestDynamic033.Test3" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Test3" Height="300" Width="600"> <StackPanel VerticalAlignment="Stretch" Height="Auto"> <DockPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Height="Auto" Margin="10"> <GroupBox DockPanel.Dock="Right" Header="Help" Width="100" Background="Beige" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" Height="Auto"> <TextBlock Text="This is the help that is available on the news screen." TextWrapping="Wrap" /> </GroupBox> <StackPanel DockPanel.Dock="Left" Margin="10" …