在 WPF 用户控件库中的用户控件之间共享资源的最简单方法是什么?

其中有一个 WPF 用户控件库和两个(或多个)用户控件.我需要在两个用户控件中使用相同的样式.我如何分享这种风格?例如:

There are a WPF User Control library and two (or more) User Controls in it. I need to use the same style in both user controls. How can I share this style? For example:

这是样式:

<Style x:Key="customLabelStyle" TargetType="Label">
    ...
</Style>

用户控件 A:

<UserControl x:Class="Edu.Wpf.Example.UserControlA"
   ...xmlns stuff... >
   <Grid>
      ... some xaml markup...
      <Label Style="{StaticResource customLabelStyle}"/>
   </Grid>
</UserControl>

用户控件 B:

 <UserControl x:Class="Edu.Wpf.Example.UserControlB"
   ...xmlns stuff... >
   <Grid>
      ... some another xaml markup...
      <Label Style="{StaticResource customLabelStyle}"/>
   </Grid>
</UserControl>

那么如何在不涉及应用程序 app.xaml 资源字典的情况下在库中的用户控件之间共享这种样式?

So how can I share this style between user controls in the library without involving of the application app.xaml resource dictionary?

更新

我可以将 Themes\Generic.xaml 添加到我的库中并在那里定义样式.但在这种情况下，我必须使用 ComponentResourceKey 作为样式的键.正确的?它很长而且不是很方便的表达...

I can add Themes\Generic.xaml into my library and define the style there. But in this case I have to use ComponentResourceKey as the key of the style. Right? It's long and not very handy expression...