title: WPF Check box: Check changed handling
body: <p>In WPF data binding, I can bind the IsChecked property to some data, e.g. user setting, but I need to handle "CheckChanged" event, I know I can seperately handle <strong><em>Checked</em></strong>, <strong><em>Unchecked</em></strong> event, but is there any way to get notified when this value is changed?</p>
  
  <pre><code>&lt;CheckBox Content="Case Sensitive" IsChecked="{Binding bSearchCaseSensitive,
            Source={x:Static Properties:Settings.Default}}" /&gt;
  </code></pre>
  
  <p>Note: I don't care if it is checked or unchecked. I just want to be notified when it is changed.</p>