title: wpf propertyGrid
body: <p>I need a propertyGrid for my WPF application . after lots of searches I have found <a href="http://wpg.codeplex.com" rel="nofollow noreferrer">this</a>
  I have added the assembly (exe file) when I add the propertyGrid to my form and I run it I can't see it in the form .
  xaml code :</p>
  
  <pre><code>&lt;Window x:Class="propertyGridTest.Window1"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          xmlns:wpg="clr-namespace:Deepforest.WPF.Controls;assembly=WPGDemo"
      Title="Window1" Height="300" Width="300"&gt;
      &lt;Grid&gt;
          &lt;Button x:Name="btn" Click="btn_Click" Height="35.5" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="55"&gt;&lt;/Button&gt;
          &lt;wpg:PropertyGrid x:Name="property" Width="100" Height="100"&gt; &lt;/wpg:PropertyGrid&gt;
      &lt;/Grid&gt;
  &lt;/Window&gt;
  </code></pre>
  
  <p>code behind :</p>
  
  <pre><code>private void btn_Click(object sender, RoutedEventArgs e)
          {
              property.Instance = btn;
          }
  </code></pre>
  
  <p>please help me to find out why it's not visible</p>