title: WPF Converter with triggers
body: <p>i have this XAML that looks to see if a row can be 
  enabled or not inside a DataGrid</p>
  
  <pre><code>        &lt;DataGrid.RowStyle&gt;
              &lt;Style TargetType="DataGridRow"&gt;
                  &lt;Style.Triggers&gt;
                      &lt;DataTrigger Binding="{Binding State, Converter={StaticResource converter}}" Value="true"&gt;
                          &lt;Setter Property="IsEnabled" Value="true"/&gt;
                      &lt;/DataTrigger&gt;
                  &lt;/Style.Triggers&gt;
              &lt;/Style&gt;
          &lt;/DataGrid.RowStyle&gt;
  </code></pre>
  
  <p>The converter is working and returns false or true, however when it sends back false, the row is still enabled, have I done anything wrong here?</p>