如何让 StackPanel 的孩子向下填充最大空间? [英] How to get StackPanel's children to fill maximum space downward?

问题描述

我只想要左侧的流畅文本，右侧的帮助框.

I simply want flowing text on the left, and a help box on the right.

帮助框应该一直延伸到底部.

The help box should extend all the way to the bottom.

如果你去掉下面的外部 StackPanel 效果很好.

If you take out the outer StackPanel below it works great.

但由于布局原因(我动态插入 UserControls)，我需要包装 StackPanel.

But for reasons of layout (I'm inserting UserControls dynamically) I need to have the wrapping StackPanel.

如何让 GroupBox 向下延伸到 StackPanel 的底部，如您所见，我已经尝试过:

How do I get the GroupBox to extend down to the bottom of the StackPanel, as you can see I've tried:

• 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" Width="Auto" HorizontalAlignment="Stretch">
                <TextBlock Text="Here is the news that should wrap around." TextWrapping="Wrap"/>
            </StackPanel>

        </DockPanel>
    </StackPanel>
</Window>

答案:

谢谢 Mark，使用 DockPanel 而不是 StackPanel 清除了它.一般来说，我发现自己现在越来越多地使用 DockPanel 进行 WPF 布局，这里是固定的 XAML:

Answer:

Thanks Mark, using DockPanel instead of StackPanel cleared it up. In general, I find myself using DockPanel more and more now for WPF layouting, here's the fixed 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" MinWidth="500" MinHeight="200">
    <DockPanel 
        VerticalAlignment="Stretch" 
        Height="Auto">

        <DockPanel 
            HorizontalAlignment="Stretch" 
            VerticalAlignment="Stretch" 
            Height="Auto" 
            MinWidth="400"
            Margin="10">

            <GroupBox 
                DockPanel.Dock="Right" 
                Header="Help" 
                Width="100" 
                VerticalAlignment="Stretch" 
                VerticalContentAlignment="Stretch" 
                Height="Auto">
                <Border CornerRadius="3" Background="Beige">
                    <TextBlock Text="This is the help that is available on the news screen." TextWrapping="Wrap" 

                Padding="5"/>
                </Border>
            </GroupBox>

            <StackPanel DockPanel.Dock="Left" Margin="10" Width="Auto" HorizontalAlignment="Stretch">
                <TextBlock Text="Here is the news that should wrap around." TextWrapping="Wrap"/>
            </StackPanel>

        </DockPanel>
    </DockPanel>
</Window>

推荐答案

听起来您想要一个 StackPanel，其中最后一个元素用完所有剩余空间.但是为什么不使用 DockPanel 呢?用DockPanel.Dock="Top"装饰DockPanel中的其他元素，然后你的帮助控件可以填充剩余的空间.

It sounds like you want a StackPanel where the final element uses up all the remaining space. But why not use a DockPanel? Decorate the other elements in the DockPanel with DockPanel.Dock="Top", and then your help control can fill the remaining space.

XAML:

<DockPanel Width="200" Height="200" Background="PowderBlue">
    <TextBlock DockPanel.Dock="Top">Something</TextBlock>
    <TextBlock DockPanel.Dock="Top">Something else</TextBlock>
    <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" 
           Width="Auto" HorizontalAlignment="Stretch">
          <TextBlock Text="Here is the news that should wrap around." 
                     TextWrapping="Wrap"/>
      </StackPanel>
    </DockPanel>
</DockPanel>

如果您在一个没有 DockPanel 可用的平台上(例如 WindowsStore)，您可以使用网格创建相同的效果.这是上面使用网格完成的示例:

If you are on a platform without DockPanel available (e.g. WindowsStore), you can create the same effect with a grid. Here's the above example accomplished using grids instead:

<Grid Width="200" Height="200" Background="PowderBlue">
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
    </Grid.RowDefinitions>
    <StackPanel Grid.Row="0">
        <TextBlock>Something</TextBlock>
        <TextBlock>Something else</TextBlock>
    </StackPanel>
    <Grid Height="Auto" Grid.Row="1" Margin="10">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="*"/>
            <ColumnDefinition Width="100"/>
        </Grid.ColumnDefinitions>
        <GroupBox
            Width="100"
            Height="Auto"
            Grid.Column="1"
            Background="Beige"
            Header="Help">
            <TextBlock Text="This is the help that is available on the news screen." 
              TextWrapping="Wrap"/>
        </GroupBox>
        <StackPanel Width="Auto" Margin="10" DockPanel.Dock="Left">
            <TextBlock Text="Here is the news that should wrap around." 
              TextWrapping="Wrap"/>
        </StackPanel>
    </Grid>
</Grid>

这篇关于如何让 StackPanel 的孩子向下填充最大空间?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！