title: Using multiple string resources from .resw file into ContentDialog
body: <p>I would like to set the PrimaryButtonText, SecondaryButtonText and Title attributes of a ContentDialog with strings from my .resw file. Unfortunately Ι can do this only for one attribute using x:Uid, since setting x:Uid two times inside ContentDialog can not be accepted. I even tried to do something like that:</p>
  
  <pre><code>&lt;ContentDialog&gt;
  &lt;ContentDialog.PrimaryButtonText x:Uid="DialogConfirm" /&gt;
      &lt;ContentDialog.SecondaryButtonText x:Uid="DialogCancel" /&gt;
  &lt;/ContentDialog&gt;
  </code></pre>
  
  <p>But I got an exception  </p>
  
  <blockquote>
    <p>XBF generation error code 0x09c8</p>
  </blockquote>
  
  <p>Is there any way to accomplish this?</p>