title: How to apply a DataTrigger when an element IsSelected
body: <p>I need to apply</p>
  
  <pre><code> &lt;Setter Property="Source" Value="{Binding ImageUrlHoverString}"/&gt;
  </code></pre>
  
  <p>when an user <strong>Select an item</strong> in the ListBox.</p>
  
  <p>Any idea how to do it?</p>
  
  <pre><code>    &lt;DataTemplate x:Key="FloorsListboxDataTemplate"&gt;
             &lt;Image&gt;
                  &lt;Image.Style&gt;
                      &lt;Style TargetType="{x:Type Image}"&gt;
                          &lt;Setter Property="Source" Value="{Binding ImageUrlCurrentString}" /&gt;
                          &lt;Style.Triggers&gt;
                              &lt;DataTrigger Value="True" Binding="{Binding IsActive}"&gt;
                                  &lt;Setter Property="Source" Value="{Binding ImageUrlHoverString}"/&gt;
                              &lt;/DataTrigger&gt;
                          &lt;/Style.Triggers&gt;
                      &lt;/Style&gt;
                  &lt;/Image.Style&gt;
              &lt;/Image&gt;
      &lt;/DataTemplate&gt;
  </code></pre>
  
  <p>using this code below, it does not work</p>
  
  <pre><code>...
                                  &lt;DataTrigger Binding="{Binding IsSelected}"&gt;
                                      &lt;Setter Property="Source" Value="{Binding ImageUrlHoverString}"/&gt;
                                  &lt;/DataTrigger&gt;
  ...
  </code></pre>