How to define list of Points for design-time data
<p>Is it possible to perform design-time binding of <code>Polygon.Points</code> using <code>DesignData</code>? I tried the following:</p>

<p><strong>Polygon</strong></p>

<pre><code>&lt;Polygon Points="{Binding}" d:DataContext="{d:DesignData Source=./SamplePoints.xaml}"&gt;
</code></pre>

<p><strong>SamplePoints.xaml</strong> (Build Action=DesignData, Custom Tool=MSBuild:Compile)</p>

<pre><code>&lt;media:PointCollection 
  xmlns:win="System.Windows"
  xmlns:media="System.Windows.Media"&gt;
  &lt;win:Point X="10" Y="12"/&gt;
  &lt;win:Point X="21" Y="21" /&gt;
  &lt;win:Point X="13" Y="14" /&gt;
  &lt;win:Point X="41" Y="51" /&gt;
&lt;/media:PointCollection&gt;
</code></pre>

<p>It doesn't recognize <code>PointCollection</code> and <code>Point</code> classes. I have ensured that <code>WindowBase</code> and <code>PresentationCore</code> are included in References. Can anyone help?</p>