c# - How to get correct file extension when you know content-type

Question

I have a byte[] containing data for a file. Array can contain data for several different filetypes like xml, jpg, html, csv, etc.

I need to save that file in disk.

I'm looking for a c# code to find out proper file extension when you know content-type, but aren't sure for the file extension?

Answer 1

http://cyotek.com/article/display/mime-types-and-file-extensions has a snippet for doing this, essentially looking up the extension in the registry under HKEY_CLASSES_ROOTMIMEDatabaseContent Type<mime type>