1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using System.IO;
 6
 7 namespace 遍历文件夹和子文件夹
 8 {
 9     class Program
10     {
11         private static FileStream fs;
12         private static StreamWriter sw;
13
14         static void Main(string[] args)
15         {
16             string path;
17             int leval=0;
18
19             Console.WriteLine("请输入需要列出内容的文件夹的完整路径和文件名：");
20             path=Console.ReadLine();
21             path.Replace('\\','/');
22
23             fs = new FileStream("result.txt", FileMode.Create);
24             sw = new StreamWriter(fs);
25
26             //开始写入文件
27             sw.WriteLine("遍历结果如下：");
28             sw.WriteLine(path);
29
30             listDirectory(path,leval);
31
32             //清空缓冲区
33             sw.Flush();
34             //关闭流
35             sw.Close();
36             fs.Close();
37             Console.WriteLine("请按任意键继续……");
38             Console.ReadKey();
39         }
40
41         /// <summary>
42         /// 列出path路径对应的文件夹中的子文件夹和文件
43         /// 然后再递归列出子文件夹内的文件和文件夹
44         /// </summary>
45         /// <param name="path">需要列出内容的文件夹的路径</param>
46         /// <param name="leval">当前递归层级，用于控制输出前导空格的数量</param>
47         private static void listDirectory(string path,int leval)
48         {
49             DirectoryInfo theFolder = new DirectoryInfo(@path);
50
51             leval++;
52
53             //遍历文件
54             foreach (FileInfo NextFile in theFolder.GetFiles())
55             {
56                 for (int i = 0; i < leval; i++) sw.Write('\t');
57                 sw.Write("-->");
58                 sw.WriteLine(NextFile.Name);
59             }
60
61             //遍历文件夹
62             foreach (DirectoryInfo NextFolder in theFolder.GetDirectories())
63             {
64                 for (int i = 0; i < leval; i++) sw.Write('\t');
65                 sw.Write("--)");
66                 sw.WriteLine(NextFolder.Name);
67                 listDirectory(NextFolder.FullName, leval);
68             }
69         }
70     }
71 }