WPF:如何使空的TextBlock不占用空间? [英] WPF: How to make empty TextBlock not to occupy space?

问题描述

假设我有一个简单的布局，例如:

Let's say that I have a simple layout such as this:

<StackPanel>
  <TextBlock Text="{Binding Path=Title}" />
  <TextBlock Text="{Binding Path=ShortDescription}" />
  <TextBlock Text="{Binding Path=LongDescription}" />
</StackPanel>

现在，当我将ShortDescription设置为null或空字符串时，第二个TextBlock仍然存在间隙.是否有一些属性可以防止空的文本块占用空间?还是应该使用其他控件?

Now when I have ShortDescription set to null or empty string there's still a gap in place of second TextBlock. Is there some property to prevent an empty textblock from occupying space? Or should I use some other control?

谢谢.

推荐答案

您要将文本框的可见性设置为"Collapsed".

You want to set the visibility of the textbox to "Collapsed".

可见性可以是:
可见-自我解释
隐藏-不可见，但仍会占用空间
收合-看不见且不占用空间

Visibility can be either:
Visible - Self explanatory
Hidden - Invisible but still takes up space
Collapsed - Invisible and takes up no space

您可能应该设置一个触发器，如下所示:

You should probably set up a trigger, like so:

<Trigger Property="Text" Value="{x:Null}">
    <Setter Property="Visibility" Value="Collapsed"/>
</Trigger>

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