title: Cant raise event on image mouse enter
body: <p>On my wpf form i have image and toggle button controls. 
  On image mouse over i want to raise event to the toggle button - this event will actully will simulate the mouser enter to the toggle button. </p>
  
  <p>For some reason i get crash on the raiseEvent. </p>
  
  <p>The code:</p>
  
  <pre><code>&lt;Grid&gt;
  
      &lt;Grid.RowDefinitions&gt;
          &lt;RowDefinition Height=".9*"/&gt;
          &lt;RowDefinition Height=".1*"/&gt;
      &lt;/Grid.RowDefinitions&gt;
  
      &lt;ToggleButton Name="toggleBtn"  Grid.Row="0" Grid.RowSpan="2" Content="...test..." VerticalContentAlignment="Bottom" /&gt;
  
      &lt;Image Name="imgCtrl" Grid.Row="0" Source="someImg.jpg" Stretch="Fill" MouseEnter="imgMouseEnter_Event" /&gt;
  
  
  &lt;/Grid&gt;
  </code></pre>
  
  <p>The code that thru the event </p>
  
  <pre><code>    private void imgMouseEnter_Event( object sender, MouseEventArgs e )
      {
          toggleBtn.RaiseEvent( new RoutedEventArgs( ToggleButton.MouseEnterEvent ) );
      }
  </code></pre>
  
  <p>Thanks for any help. </p>