wpf：当文本对于 1 行来说太大时，使文本块高度扩展

发布于 2024-08-05 07:08:48 字数 676 浏览 10 评论 0原文

我有一个带有项目模板的列表视图：

<ListView x:Name="messages" HorizontalAlignment="Left" 
    Background="{x:Null}" BorderBrush="{x:Null}" Foreground="Black">
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextBlock Style="{DynamicResource h3}" Text="{Binding}"
                Margin="10" MaxWidth="850"/>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

此列表视图位于垂直堆栈面板中。所以它的宽度与 stackpanel 的宽度相同。

列表视图必须显示可能很长的消息。我试图确保当消息对于可用宽度来说太长时，文本块会获得额外的高度并且文本会显示在两行上。

我可以通过谷歌搜索很多方法来实现固定高度，但由于我事先不知道是否需要超过 1 行，所以我想确保它自动发生。我不希望每个项目都有 2 行的高度，只有在需要时才这样做。

我怎样才能实现这个目标？

原文

I have a listview with an itemtemplate:

<ListView x:Name="messages" HorizontalAlignment="Left" 
    Background="{x:Null}" BorderBrush="{x:Null}" Foreground="Black">
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextBlock Style="{DynamicResource h3}" Text="{Binding}"
                Margin="10" MaxWidth="850"/>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

This listview is in a vertical stackpanel. So its width is the same as the stackpanel's width.

The listview must show messages that could be very long. I'm trying to make sure that when a message is too long for the available width, the textblock gets extra height and the text gets displayed on 2 lines.

I can google a lot of ways to have this achieved with a fixed height, but since I don't know in advance if I'll need more than 1 line, I'd like to make sure it happens automaticly.
I don't want every item to have the height of 2 lines, only when it's needed.

How can I achieve this?

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