title: How to Set Item source for WPF toolkit auto complete box inside dataTemplate
body: <p>I have the following ListBox </p>
  
  <pre><code>&lt;ListBox x:Name="lbListItems"
          &lt;ListBox.ItemTemplate&gt;
              &lt;DataTemplate&gt;
                  &lt;ToggleButton x:Name="btnItem"&gt;
                      &lt;StackPanel Orientation="Horizontal" Width="956"&gt;
                          &lt;toolkit:AutoCompleteBox x:Name="acbItem"&lt;/toolkit:AutoCompleteBox&gt;
                      &lt;/StackPanel&gt;
                  &lt;/ToggleButton&gt;
              &lt;/DataTemplate&gt;
          &lt;/ListBox.ItemTemplate&gt;
  &lt;/ListBox&gt;
  </code></pre>
  
  <p>How can I set the ItemsSource for acbItem in code behind ?
  I cant access to it !</p>