title: Open excel with EPPlus without saving to file
body: <p>Rright now I'm opening excel using 
      System.Diagnostics.Process.Start(fileInfo);</p>
  
  <p>to open my package after saving it to a file. </p>
  
  <p>Is it possible to open excel without having to save the file to a location? I would like the user to decide whether or not to save the file.</p>