title: Mapping between Excel and XML file - How to refresh from C#
body: <p>Got an excel spread sheet where I specify mapping to an XML file.</p>
  
  <p>I'd like to open the spread sheet from C# and force refresh the cells mappped to the XML file.
  -> How can I do that ? Any dll I need to reference ?</p>
  
  <p>Thanks</p>
  
  <p>Olivier </p>