Make control binding more easily

[Cricle]

Current need to use this method to bind dynamically combined text.

<TextBlock DataContext="{Binding ElementName=Tbx}">
  <TextBlock.Text>
      <l:Lang Key="F1">
          <l:LangArgument Value="{Binding DataContext.Text}"/>
      </l:Lang>
  </TextBlock.Text>
</TextBlock>

But I think he can write like this

<TextBlock>
    <TextBlock.Text>
        <l:Lang Key="F1">
            <l:LangArgument Value="{Binding ElementName=Tbx,Path=Text}"/>
        </l:Lang>
    </TextBlock.Text>
</TextBlock>