title: BooleanToVisibilityConverter with checkbox
body: <p>I am trying to hide the grid, controlled by the checkbox. Currently, when I use the box nothing happens. I cannot figure out why. Everything I have found online is exactly what I have.</p>
  
  <pre><code>&lt;Window.Resources&gt;
      &lt;BooleanToVisibilityConverter x:Key="BoolToVis"/&gt;
  &lt;/Window.Resources&gt;
  &lt;Grid&gt;
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition Height="Auto"/&gt;
          &lt;RowDefinition /&gt;
      &lt;/Grid.RowDefinitions&gt;
      &lt;!--upper window..--&gt;
      &lt;CheckBox x:Name="show" Grid.Row="1" IsChecked="False"&gt;Display Preview with Sliders?&lt;/CheckBox&gt;
      &lt;Grid Grid.Row="1" 
            Visibility="{Binding ElementName=show, Path=isChecked, Converter={StaticResource BoolToVis}}"&gt;
          &lt;!--what I want to hide--&gt;
      &lt;/Grid&gt;
  &lt;/Grid&gt;
  </code></pre>
  
  <p>It doesn't make any sense.</p>