title: How do you create the hash of a folder in C#?
body: <p>I need to create the hash for a folder that contains some files. I've already done this task for each of the files, but I'm searching for a way to create one hash for all files in a folder. Any ideas on how to do that?</p>
  <p>(Of course I can create the hash for each file and concatenate it to some big hash but it's not a way I like)</p>