title: how to show a window with sliding effect from right to left in WPF
body: <p>I want to show all my windows except Main page from right to left transition style.</p>
  
  <p>I tried this </p>
  
  <pre><code>&lt;Window.Triggers&gt;
      &lt;EventTrigger RoutedEvent="Window.Loaded"&gt;
          &lt;BeginStoryboard&gt;
              &lt;!--&lt;Storyboard&gt;
                  &lt;DoubleAnimation Storyboard.TargetProperty="Opacity" From="0" To="1" Duration="0:0:2" FillBehavior="HoldEnd" /&gt;
              &lt;/Storyboard&gt;--&gt;
  
              &lt;Storyboard &gt;
                  &lt;ThicknessAnimation Duration="0:0:.8" Storyboard.TargetProperty="Margin" To="-1200,0,-100,0" AccelerationRatio=".1"/&gt;
              &lt;/Storyboard&gt;
          &lt;/BeginStoryboard&gt;
      &lt;/EventTrigger&gt;
  &lt;/Window.Triggers&gt;
  </code></pre>
  
  <p>The same if i put stackpanel trigger it's coming from left to right inside the window.</p>
  
  <p>Like wise i need for showing window itself.</p>
  
  <p>How to achieve this ?</p>