title: Getting a IRandomAccessStream to a file in Windows Store App
body: <p>I need to get IRandomAccessStream to a file without a picker.</p>
  
  <p>However, I'm stuck with IStorageFile or IRandomAccessStreamReference and can't find a way to get IRandomAccessStream from either of those.</p>
  
  <p>I write the code with C++ (no /ZW), but I don't think it matters in this case.</p>
  
  <p>Please help,
  Moshe</p>