title: How do I get File Type Information based on extension? (not MIME) in c#
body: <p>How do I get the general File type description based on extension like Explorer does it? So not MIME but the information that the end-user sees, like.</p>
  
  <p>.doc = Microsoft Office Word 97 - 2003 Document
  .zip = ZIP File
  .avi = Video File.</p>
  
  <p>And how can I get the 'secondary' information that seems to be available, which I guess it not extension based. Like on "Video Files" it can give you the 'Length' of the movie or on doc files how many pages it has.. etc etc..</p>