I found this page and this is just what I was looking for. I have some problems when I use this code. I just copy and paste it on my page.

When I add my path like this
string folderPath = Server.MapPath( "userFiles/mh22gw");

It will not work, it only shows number of subfolders. When I add my path like this:
string folderPath = Server.MapPath( "userFiles" );

Then it works...