DWfile.listFolder()

Availability 2.0
Description Gets a list of the contents of the specified folder.
Arguments folderURL, {constraint}
The first argument is the folder for which you want a contents list, expressed as a file:// URL, plus an optional wildcard file mask. Valid wildcards are * (matches 1 or more characters) and ? (matches a single character).
The second argument, if supplied, must be either "files" (return only files) or "directories" (return only directories). If omitted, the function returns both files and directories.
Returns An array of strings representing the contents of the folder.
Example The following code gets a list of all the text (.txt) files in the temp folder and displays the list in an alert box. 
var folderURL = "file:///c|/temp";
var fileMask = "*.txt";
var list = listFolder(folderURL + "/" + fileMask, "files");
if (list){
  alert(folderURL + " contains: " + list.join("\n"));
}