title: Opening an Excel/Word file from FileStream (or similar)
body: <p>I'm using C#, .NET 4.0 and the office interop library to read the contents of the file.</p>
  
  <p>I'm reading the office files from BLOBs, so I'm wondering if there's a way to directly input the filestream instead of opening it from disk? Perhaps I need to use another library for this?</p>
  
  <p>EDIT: I should note that it needs to support older office formats as well!</p>