如何显示C盘目录

Question

怎么显示C盘的目录信息。
比如
C:
  文件夹A
    文件夹A1
       文件A11
  文件夹B
    文件夹B1
    文件夹B2
      文件B21能某个盘符或者目录下的信息，包含的文件夹和文件？
怎么弄呢？
谢谢！！！！

Answer 1

System.IO.DirectoryInfo   di=new   DirectoryInfo   (@"c:\");   
  foreach(FileSystemInfo   f   in   di.GetFileSystemInfos   ())   
  {   
  Response.Write   (f.Name+"<br>");   
  }

Answer 2

DirectoryInfo div = new DirectoryInfo(@"C:\");
            DirectoryInfo[] ar = div.GetDirectories();
            if (ar.Length == 0)
            {
                return file;
            }
            else
            {
                foreach (DirectoryInfo di in ar)
                {
                    return file + getpath(di.FullName);
                }
                return "";
            }

Answer 3

class Program
    {
        static void Main(string[] args)
        {
            DirectoryInfo thisOne = new DirectoryInfo("C:\\");
            ShowDirectoryInfo(thisOne);
            Console.ReadKey();
        }
        private static void ShowDirectoryInfo(DirectoryInfo dir)
        {
            DirectoryInfo[] subDirectories = dir.GetDirectories();
            for (int i = 0; i < subDirectories.Length; i++)
            {
                Console.WriteLine(subDirectories[i].Name + "\r\n");
                ShowDirectoryInfo(subDirectories[i]);
            }
        }
    }