Determing folder size using c#

Ready made code available :)
www.codeproject.com/useritems/Directorysize.asp

or more simply like this
long total = 0;
foreach(System.IO.FileInfo file in dirInfo.GetFiles())
total += file.Length;

what would be the best way to display it in the app? tried using a label but returns a conversion error.
I

What code did u use to get the conversion error?

Sorry -

System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo("C:\\tmp");
long size = getDirSize(dir);

public long getDirSize(System.IO.DirectoryInfo dir)
        {
            long size = 0;
            System.IO.DirectoryInfo[] dirs = dir.GetDirectories();
            System.IO.FileInfo[] files = dir.GetFiles();

            foreach (System.IO.FileInfo fi in files)
                size += fi.Length;

            foreach (System.IO.DirectoryInfo di in dirs)
                size += getDirSize(di);
            return size;
        }

where here are u assigning the long value to a label?

System.IO.DirectoryInfo dir = new System.IO.DirectoryInfo("C:\\tmp");
long size = getDirSize(dir);
lblsize = size;

amongst other places as well. I'm learning.

Oh YEA!!!

Thanks to all who hung in there with a beginner