title: Get all files from Request.Files with same Key
body: <p>I have some files with the same keys in <strong>Request.Files</strong> object and when I use this code <strong>Request.Files.Keys["keyName"]</strong> it returns just one file but I have more than one file with that key. what should I do?!
  By the way I can't use key names as argument because I don't know what key exactly is, maybe model binder can help in this case but I don't know how can I use it for Files.
  Thanks</p>