正文
#基础知识
1、获得当前运行程序的路径
1 string rootPath = Directory.GetCurrentDirectory();
2、获得该文件夹下的文件，返回类型为FileInfo
1 string path=@"X:\XXX\XX";
2 DirectoryInfo root = new DirectoryInfo(path);
3 FileInfo[] files=root.GetFiles();
3、获得该文件夹下的子目录，返回类型为DirectoryInfo
1 string path=@"X:\XXX\XX";
2 DirectoryInfo root = new DirectoryInfo(path);
3 DirctoryInfo[] dics=root.GetDirectories();
4、获得文件夹名
1 string path=@"X:\XXX\XX";
2 DirectoryInfo root = new DirectoryInfo(path);
3 string dicName=root.Name;
5、获得文件夹完整的路径名
1 string path=@"X:\XXX\XX";
2 DirectoryInfo root = new DirectoryInfo(path);
3 string dicName=root.FullName;
6、获取文件的Name和FullName
1 string path=@"X:\XXX\XX";
2 DirectoryInfo root = new DirectoryInfo(path);
3 foreach (FileInfo f in root.GetFiles())
4 {
5 string name=f.Name;
6 string fullName=f.FullName;
7 }
#只获取目录下一级的文件夹与文件
1 String path = @"X:\xxx\xxx";
2
3 //第一种方法
4 string[] files = Directory.GetFiles(path, "*.txt");
5
6 foreach (string file in files)
7 {
8 Console.WriteLine(file);
9 }
10
11 //第二种方法
12 DirectoryInfo folder = new DirectoryInfo(path);
13
14 foreach (FileInfo file in folder.GetFiles("*.txt"))
15 {
16 Console.WriteLine(file.FullName);
17 }
# 递归地输出当前运行程序所在的磁盘下的所有文件名和子目录名
1 static void Main(string[] args)
2 {
3 //获取当前程序所在的文件路径
4 String rootPath = Directory.GetCurrentDirectory();
5 string parentPath = Directory.GetParent(rootPath).FullName;//上级目录
6 string topPath = Directory.GetParent(parentPath).FullName;//上上级目录
7 StreamWriter sw = null;
8 try
9 {
10 //创建输出流，将得到文件名子目录名保存到txt中
11 sw = new StreamWriter(new FileStream("fileList.txt", FileMode.Append));
12 sw.WriteLine("根目录：" + topPath);
13 getDirectory(sw, topPath, 2);
14 }
15 catch (IOException e)
16 {
17 Console.WriteLine(e.Message);
18 }
19 finally
20 {
21 if (sw != null)
22 {
23 sw.Close();
24 Console.WriteLine("完成");
25 }
26 }
27
28 }
29
30 /// <summary>
31 /// 获得指定路径下所有文件名
32 /// </summary>
33 /// <param name="sw">文件写入流</param>
34 /// <param name="path">文件写入流</param>
35 /// <param name="indent">输出时的缩进量</param>
36 public static void getFileName(StreamWriter sw, string path, int indent)
37 {
38 DirectoryInfo root = new DirectoryInfo(path);
39 foreach (FileInfo f in root.GetFiles())
40 {
41 for (int i = 0; i < indent; i++)
42 {
43 sw.Write(" ");
44 }
45 sw.WriteLine(f.Name);
46 }
47 }
48
49 /// <summary>
50 /// 获得指定路径下所有子目录名
51 /// </summary>
52 /// <param name="sw">文件写入流</param>
53 /// <param name="path">文件夹路径</param>
54 /// <param name="indent">输出时的缩进量</param>
55 public static void getDirectory(StreamWriter sw, string path, int indent)
56 {
57 getFileName(sw, path, indent);
58 DirectoryInfo root = new DirectoryInfo(path);
59 foreach (DirectoryInfo d in root.GetDirectories())
60 {
61 for (int i = 0; i < indent; i++)
62 {
63 sw.Write(" ");
64 }
65 sw.WriteLine("文件夹：" + d.Name);
66 getDirectory(sw, d.FullName, indent + 2);
67 sw.WriteLine();
68 }
69 }
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