Check if DirectoryInfo.FullName is special folder

Question

My goal is to check, if DirectoryInfo.FullName is one of the special folders.

Here is what I'm doing for this (Check directoryInfo.FullName to each special folder if they are equal):

        DirectoryInfo directoryInfo = new DirectoryInfo("Directory path");

        if (directoryInfo.FullName == Environment.GetFolderPath(Environment.SpecialFolder.Windows) ||
            directoryInfo.FullName == Environment.GetFolderPath(Environment.SpecialFolder.ProgramFiles ||) 
            ...
            ...
           )
        {
            // directoryInfo is the special folder
        }

But there are many special folders (Cookies, ApplicationData, InternetCache, etc.). Is there any way to do this task more efficiently?

Thanks.

Answer 1

Try this following code :

        bool result = false;
        DirectoryInfo directoryInfo = new DirectoryInfo("Directory path");
        foreach (Environment.SpecialFolder suit in Enum.GetValues(typeof(Environment.SpecialFolder)))
        {
            if (directoryInfo.FullName == Environment.GetFolderPath(suit))
            {
                result = true;
                break;
            }
        }

        if (result)
        {
            // Do what ever you want
        }

hope this help.

Answer 2

Use a reflection to get all values from that enum, like here http://geekswithblogs.net/shahed/archive/2006/12/06/100427.aspx and check against collection of generated paths you get.

Answer 3

I'm afraid the answers given seem to be the only way, I hate the special folders because what ought to be a very simple function -

void CollectFiles(string strDir, string pattern) {
  DirectoryInfo di = new DirectoryInfo(strDir);
  foreach(FileInfo fi in di.GetFiles(pattern) {
    //store file data
  }
  foreach(DirectoryInfo diInfo in di.GetDirectories()) {
    CollectFiles(diInfo);
  }
}

Becomes ugly because you have to include

Check If This Is A Special Folder And Deal With It And Its Child Folders Differently ();

Fair enough Microsoft, to have a folder that could exist anywhere, on a remote PC, on a server etc. But really what is wrong with the UNIX/Linux way, use links to folder and if the destination physical folder has to move, alter the link. Then you can itterate them in a nice neat function treating them all as if ordinary folders.