WPF:如何使控件在 StackPanel 中拉伸? [英] WPF: How to make controls stretch in a StackPanel?

问题描述

Slider 和其他一些控件在放置在 StackPanel 中时不会拉伸以填充可用空间；相反，宽度始终为 MinWidth(如果未设置 MinWidth，则为大约 10 个像素).我如何让它拉伸(相当于 WinForms 中的 Anchor.Left|Anchor.Right)?示例:

A Slider and some other controls won't stretch to fill available space when placed in a StackPanel; instead the width is always MinWidth (or about 10 pixels if MinWidth is not set). How do I make it stretch (the equivalent of Anchor.Left|Anchor.Right in WinForms)? Example:

<StackPanel DockPanel.Dock="Bottom" Orientation="Horizontal">
    <Slider Value="14" SmallChange="0.5" Maximum="100" Minimum="4" 
            x:Name="FontSize" MinWidth="30" LargeChange="2" 
            TickFrequency="10" TickPlacement="TopLeft" 
            HorizontalAlignment="Stretch"/>
    <TextBlock Margin="8" Text="{Binding ElementName=FontSize, Path=Value}" 
               VerticalAlignment="Center"/>
</StackPanel>

推荐答案

你想要 DockPanel 代替:

You want DockPanel instead:

<DockPanel DockPanel.Dock="Bottom" LastChildFill="True">
    <TextBlock DockPanel.Dock="Right" ... />
    <Slider ... />
</DockPanel>

DockPanel 为您提供所需的锚点"功能.StackPanel 只是将东西彼此相邻堆叠.

DockPanel gets you the "Anchor" functionality you want. StackPanel simply stacks things next to each other.

我从您的代码块中注意到您的 StackPanel 已经停靠在停靠面板内，因此我在上面的代码示例中包含了相同的停靠属性.

I notice from your code block that your StackPanel is already docked inside a dockpanel, so I've included the same docking attribute in my code sample above.

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