using System;
 using System.IO;namespace 目录
 {
     class Program
     {
         static void Main(string[] args)
         {
             Console.WriteLine("Hello World!");
             ListFiles("G:");
         }
         public static void ListFiles(string pathname)
         {
             string[] subFiles = Directory.GetFiles(pathname);
             int i = 0;
             foreach (string file in subFiles)
             {
                 i++;
                 Console.WriteLine(file);
             }
             Console.WriteLine("累计:" + i);
         }
     }
 }