File Stream C#

using System;
    using System.IO;
    class Program
    {
        static void Main(string[] args)
        {
            foreach (string entry in Directory.GetDirectories(@"C:\"))
            {
                DisplayFileSystemInfoAttributes(new DirectoryInfo(entry));
            }
        }
        static void DisplayFileSystemInfoAttributes(FileSystemInfo fsi)
        {
            string entryType = "File";
            if ((fsi.Attributes & FileAttributes.Directory) == FileAttributes.Directory )
            {
                entryType = "Directory";
            }
            Console.WriteLine("{0} entry {1} was created on {2:D}", entryType, fsi.FullName, fsi.CreationTime);
        }
    }