title: Mango Application Tile - remove back
body: <p>This is a simple question, and a seemingly simple task but I can't find any info on how to accomplish what I need to do.  </p>
  
  <p>I have an application whose main tile (when pinned) sometimes needs to be the default, single sided tile and sometimes needs to have information displayed on the back of the tile.  I can add the BackBackgroundImage, BackContent and BackTitle successfully from the ScheduledActionService, but I can't remove them when they are no longer required.  This isn't a secondary tile so I can't remove it and re-create and re-add it.</p>
  
  <p>Does anyone know if it is possible to revert a double-sided tile back to single-sided via code, and if so, how can I achieve that behaviour, please?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>The settings that get applied from the StandardTileData object are additive - if you <em>only</em> specify a title, for example, all other elements remain the same and only the title is updated.  I have attempted to set the three parameters that appear on the back of the tile to null and had partial success. The effect is that the background image, title text and content text are all removed, but the tile still flips over to show a completely empty reverse side.</p>
  
  <p><strong>EDIT AGAIN</strong></p>
  
  <p>So, looking at the documentation, the tile back behaves differently to the front.  Setting the back content or backtitle to string.Empty will remove those.  All good there.  However, it does say that "If set to an empty URI, the BackBackgroundImage will not be displayed.".  How do I go about creating an empty Uri?  I tried new Uri(string,Empty) but that throws an exception about trying to create an empty Uri - which is what I'm trying to do.</p>