title: How do I get a scrollbar in a scrollviewer to focus the scrollviewer when clicked?
body: <p>Currently with a scrollviewer, clicking the scroll bar contained in it to pan the content around it will not focus the viewer (or anything for that matter). 
  I wish to have it so when you scroll by dragging the scroll, or even clicking the scrollbar will focus the parent (scroll viewer).</p>
  
  <p>I achieved this somewhat by attaching a ScrollChanged handler on the scrollviewer and calling sender.focus(). Unforutnally ScrollChanged is called on initialising the scrollviewer and so on loading the </p>
  
  <p>I also tried attaching event setters with still no luck.</p>
  
  <p>Ideally I would like it on some sort of style or something which allows me to apply it to all scrollviewers across the entire application.</p>
  
  <p><strong>Edit: Just for futher clarification, if I use this xaml and click on the scroll bar it will not turn the background blue (gotfocus event). When I click inside the scroll viewer or the button it will.</strong></p>
  
  <pre><code>&lt;Window x:Class="GotFocusProblem.MainWindow"
          xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
          xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
          Title="MainWindow" Height="350" Width="525"&gt;
      &lt;Grid&gt;
          &lt;Grid Margin="20" x:Name="grid"&gt;
              &lt;Grid.Background&gt;
                  &lt;SolidColorBrush x:Name="backgrnd" Color="Transparent"/&gt;
              &lt;/Grid.Background&gt;
              &lt;ScrollViewer Margin="10" Height="100" Background="#FFEEEEEE"&gt;
                  &lt;Button Content="Button" Name="button1" Height="300"  Width="75" /&gt;
              &lt;/ScrollViewer&gt;
              &lt;Grid.Triggers&gt;
                  &lt;EventTrigger RoutedEvent="Grid.GotFocus"&gt;
                      &lt;BeginStoryboard&gt;
                          &lt;Storyboard&gt;
                              &lt;ColorAnimation
                              Storyboard.TargetName="backgrnd"
                              Storyboard.TargetProperty="Color"
                              To="Cyan"
                              BeginTime="0:0:0"
                              Duration="0:0:0" /&gt;
                          &lt;/Storyboard&gt;
                      &lt;/BeginStoryboard&gt;
                  &lt;/EventTrigger&gt;
              &lt;/Grid.Triggers&gt;
          &lt;/Grid&gt;
      &lt;/Grid&gt;
  &lt;/Window&gt;
  </code></pre>