具有自动高度的网格行中的列表框。滚动条不起作用 [英] ListBox in Grid Row with Auto height. Scrollbar is not working

问题描述

我有以下网格：

 < Grid> 
< Grid.RowDefinitions> 
< RowDefinition Height =Auto/> 
< RowDefinition Height =Auto/> 
< RowDefinition Height =*/> 
< RowDefinition Height =Auto/> 
< /Grid.RowDefinitions> 
< Border Height =50Background =GainsboroGrid.Row =0/> 
< Border Background =AliceBlueGrid.Row =1> 
< ListBox ScrollViewer.VerticalScrollBarVisibility =AutoItemsSource =asdasdfasdf3dfasdf/> 
< / Border> 
< Border Height =60Background =AquamarineGrid.Row =3/> 
< / Grid> 
  

为什么ListBox的scrollviewer未启用？最后一个边框被推出窗口。如果我将Grid.Row 2 Height设置为* star - 它很好地工作。是否有可能在自动高度网格行中使用滚动查看器的列表框？

解决方案

$ c>可以根据需要调整控件的大小。因此，您的 ListBox 会自行调整大小以显示其所有内容，滚动条将永远不会显示。

* 使您的控件可以使用可用的大小，并且不会超出此范围。

您需要做的是为 ListBox 定义 MaxHeight code>或在 RowDefinition 中使用 * 作为高度。

I have the following grid:

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="Auto"/>
        <RowDefinition Height="*"/>
        <RowDefinition Height="Auto"/>
    </Grid.RowDefinitions>
    <Border Height="50" Background="Gainsboro" Grid.Row="0"/>
    <Border Background="AliceBlue" Grid.Row="1">
        <ListBox ScrollViewer.VerticalScrollBarVisibility="Auto" ItemsSource="asdasdfasdf3dfasdf"/>
    </Border>
    <Border Height="60" Background="Aquamarine" Grid.Row="3"/>
</Grid>

Why ListBox's scrollviewer is not enabled? Last border is pushed out of a window. If i set the Grid.Row 2 Height to * star - it works nicely. Is it possible to have listbox with scrollviewer in auto height grid row?

解决方案

Auto makes your control resize as it needs. Therefore your ListBox will resize itself to show all its content and the scroll bar will never been shown.

* makes your control to take the available size, and it does not grow beyond that.

What you need to do is either define the MaxHeight property for the ListBox or use * as height in RowDefinition.

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