title: Microsoft.Windows.Controls are you missing an assembly reference?
body: <p>I'm receiving the following error:</p>
  
  <blockquote>
    <p>Error 26  The type or namespace name 'Controls' does not exist in the namespace 'Microsoft.Windows' (are you missing an assembly reference?)</p>
  </blockquote>
  
  <p>These two assemblies appear in the .g.cs file:</p>
  
  <pre><code>using Microsoft.Windows.Controls;
  using Microsoft.Windows.Controls.Primitives;
  </code></pre>
  
  <p>When I remove them, the error returns.</p>