title: Find which button is clicked
body: <p>In my windows phone application, I have a LoadMore button in one page. The loadmore button is defined in <code>style</code> in  <code>&lt;phone:PhoneApplicationPage.Resources&gt;</code> section. I have 2 listboxes in that page and uses the same style for both of the listboxes. When I click on the loadmore button, how can I identify the LoadMore button in which listbox raise the event?</p>
  
  <pre><code>&lt;phone:PhoneApplicationPage.Resources&gt;
          &lt;Style x:Key="ListBoxStyle" TargetType="ListBox"&gt;
              &lt;Setter Property="Background" Value="Transparent"/&gt;
              &lt;Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/&gt;
              &lt;Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/&gt;
              &lt;Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Visible"/&gt;
              &lt;Setter Property="BorderThickness" Value="0"/&gt;
              &lt;Setter Property="BorderBrush" Value="Transparent"/&gt;
              &lt;Setter Property="Padding" Value="0"/&gt;
              &lt;Setter Property="Template"&gt;
                  &lt;Setter.Value&gt;
                      &lt;ControlTemplate TargetType="ListBox"&gt;
                          &lt;ScrollViewer x:Name="ScrollViewer"&gt;
                              &lt;StackPanel&gt;
                                  &lt;ItemsPresenter/&gt;
                                      &lt;Button Content="Load More..." Name="btnLoadMore" Visibility="Visible" Background="White" Foreground="#FF176DDC" Click="btnLoadMore_Click"&gt;&lt;/Button&gt;
                              &lt;/StackPanel&gt;
                          &lt;/ScrollViewer&gt;
                      &lt;/ControlTemplate&gt;
                  &lt;/Setter.Value&gt;
              &lt;/Setter&gt;
          &lt;/Style&gt;
      &lt;/phone:PhoneApplicationPage.Resources&gt;
  </code></pre>
  
  <p>How can I find the button in which listbox is clicked?</p>