title: How to Find and Close an open Office document via Office Automation
body: <p>I have a program that will take the files in a directory and upload them to a server.  If the file is a Word File, I would then like to detect if the file is open in word / excel etc.  If it is open, I would like to be able to then close it, in order to delete the local copy of the file.</p>
  
  <p>Any ideas how to do this?  The program responsible for the detection and closing of the documents is a win forms app.</p>