标签不显示"_"特点

问题描述

我在WPF中的Label.Content不会显示首次出现的"_"字符.为什么?

My Label.Content in WPF doesn't display the first occurrence of "_" character. Why?

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="148" Width="211">
    <Grid>
        <Label Content="L_abel" Height="28" HorizontalAlignment="Left" Margin="37,31,0,0" Name="label1" VerticalAlignment="Top" />
    </Grid>
</Window>

设置Label.Content ="L__abel"时:

项目中没有其他代码.

推荐答案

_在WPF中用于表示访问键，即您可以使用按下以显示焦点或调用的键UI元素.这类似于在Windows API和Windows窗体中使用&的方式.由于标签旨在用作另一个控件的标签(例如，描述文本框)，因此非常期望.按下时，您应该在示例中看到带下划线的a.

_ is used in WPF to signal an access key, i.e. a key you can press with to give focus or invoke an UI element. This is similar to how & is used in the Windows API and Windows Forms. Since labels are intended to be used as the label for another control (to describe a text box, for example), this is pretty much expected. You should see the a in your example underlined when you press .

从文档:

<Label>__Hello_World</Label>

由于H之前的下划线是双精度字符，因此W键注册为访问键.

Because the underscore that precedes H is a double, the W key registers as the access key.

我想如果您既不需要也不想要Label提供的功能，则可以使用TextBlock.

I guess if you neither require nor want the features Label provides, you may use a TextBlock.

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