如何让 ScrollViewer 在 StackPanel 内工作? [英] How can I get ScrollViewer to work inside a StackPanel?

问题描述

在下面的 WPF XAML 中，ScrollViewer 不起作用(它显示一个滚动条，但您无法滚动并且内容从窗口移到底部).

In the following WPF XAML the ScrollViewer does not work (it displays a scroll bar but you cannot scroll and the contents go off the window to the bottom).

我可以将外部 StackPanel 更改为 Grid 并且它会起作用.

I can change the outer StackPanel to a Grid and it will work.

但是，在我从中复制以下代码的应用程序中，我需要有一个外部 StackPanel.我必须对 StackPanel 做什么才能使 ScrollViewer 显示可用的滚动条?VerticalAlignment="Stretch" Height="Auto" 不起作用.

However, in my application from which I reproduced the following code, I need to have an outer StackPanel. What do I have to do to the StackPanel to make the ScrollViewer show a usable scrollbar? e.g. VerticalAlignment="Stretch" Height="Auto" don't work.

 <StackPanel>
        <ScrollViewer>
            <StackPanel>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
                <TextBlock Text="This is a test"/>
            </StackPanel>
        </ScrollViewer>
 </StackPanel>

推荐答案

你不能不固定 StackPanel 的高度.它旨在朝一个方向无限增长.我建议使用不同的 Panel.为什么你需要"有一个外部的 StackPanel?

You can't without fixing the height of the StackPanel. It's designed to grow indefinitely in one direction. I'd advise using a different Panel. Why do you "need" to have an outer StackPanel?

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