转自：http://www.jb51.net/article/46334.htm
这篇文章主要介绍了c#目录操作示例,包括获取目录名称、获取子目录、查询子目录、将原目录移动到目标目录等操作，大家参考使用吧

1. 
   
2. using System;
   
3. using System.Collections.Generic;
   
4. using System.Linq;
   
5. using System.Text;
   
6. using System.IO;
   
7. namespace Humep.FileWatcher
   
8. {
   
9. /// <summary>
   
10. ///
    
11. /// </summary>
    
12. public static class DirectoryHelper
    
13. {
    
14. /// <summary>
    
15. /// 初始化目录
    
16. /// </summary>
    
17. /// <param name="directory"></param>
    
18. /// <returns></returns>
    
19. public static bool CreateDirectory(string directory)
    
20. {
    
21. if (string.IsNullOrWhiteSpace(directory))
    
22. {
    
23. return false;
    
24. }
    
25. if (Directory.Exists(directory))
    
26. {
    
27. return true;
    
28. }
    
29. var dirInfo = Directory.CreateDirectory(directory);
    
30. return dirInfo != null;
    
31. }
    
32. 
    
33. /// <summary>
    
34. /// 根据当前日组合文件夹名称
    
35. /// </summary>
    
36. /// <param name="now"></param>
    
37. /// <returns></returns>
    
38. public static string BuildDateDirectoryName(DateTime dateTime)
    
39. {
    
40. return dateTime.ToString("yyyyMMdd");
    
41. }
    
42. /// <summary>
    
43. ///
    
44. /// </summary>
    
45. /// <returns></returns>
    
46. public static string BuildTodayDirectoryName()
    
47. {
    
48. return BuildDateDirectoryName(DateTime.Now);
    
49. }
    
50. /// <summary>
    
51. /// 获取目录名称
    
52. /// </summary>
    
53. /// <param name="directory"></param>
    
54. /// <returns></returns>
    
55. public static string GetDirectoryName(string directory)
    
56. {
    
57. if (!Directory.Exists(directory))
    
58. {
    
59. return string.Empty ;// DirectoryHelper.CreateDirectory(directory);
    
60. }
    
61. return new DirectoryInfo(directory).Name;
    
62. }
    
63. /// <summary>
    
64. /// 获取目录文件夹下的所有子目录
    
65. /// </summary>
    
66. /// <param name="directory"></param>
    
67. /// <param name="filePattern"></param>
    
68. /// <returns></returns>
    
69. public static List<string> FindSubDirectories(string directory, int maxCount)
    
70. {
    
71. List<string> subDirectories = new List<string>();
    
72. if (string.IsNullOrEmpty(directory))
    
73. {
    
74. return subDirectories;
    
75. }
    
76. if (maxCount <= 0)
    
77. {
    
78. return subDirectories;
    
79. }
    
80. string[] directories = Directory.GetDirectories(directory);
    
81. foreach (string subDirectory in directories)
    
82. {
    
83. if (subDirectories.Count == maxCount)
    
84. {
    
85. break;
    
86. }
    
87. subDirectories.Add(subDirectory);
    
88. }
    
89. return subDirectories;
    
90. }
    
91. public static List<string> FindSubDirectories(string directory)
    
92. {
    
93. return Directory.GetDirectories(directory, "*", SearchOption.AllDirectories).ToList<string>();
    
94. }
    
95. /// <summary>
    
96. /// 根据时间查询子目录
    
97. /// </summary>
    
98. /// <param name="directory"></param>
    
99. /// <param name="maxCount"></param>
    
100. /// <returns></returns>
     
101. public static List<string> FindSubDirectories(string directory, int maxCount, int days)
     
102. {
     
103. List<string> subDirectories = new List<string>();
     
104. if (string.IsNullOrEmpty(directory))
     
105. {
     
106. return subDirectories;
     
107. }
     
108. if (maxCount <= 0)
     
109. {
     
110. return subDirectories;
     
111. }
     
112. string[] directories = Directory.GetDirectories(directory);
     
113. DateTime lastTime = DateTime.Now.AddDays(-Math.Abs(days));
     
114. foreach (string subDirectory in directories)
     
115. {
     
116. if (subDirectories.Count == maxCount)
     
117. {
     
118. break;
     
119. }
     
120. DirectoryInfo dirInfo = new DirectoryInfo(subDirectory);
     
121. if (dirInfo.LastWriteTime >= lastTime)
     
122. {
     
123. subDirectories.Add(subDirectory);
     
124. }
     
125. }
     
126. return subDirectories;
     
127. }
     
128. /// <summary>
     
129. /// 将原目录移动到目标目录
     
130. /// </summary>
     
131. /// <param name="sourceDirectory"></param>
     
132. /// <param name="targetDirectory"></param>
     
133. /// <returns></returns>
     
134. public static bool MoveDirectory(string sourceDirectory, string targetDirectory)
     
135. {
     
136. if (string.IsNullOrEmpty(sourceDirectory) || string.IsNullOrEmpty(targetDirectory))
     
137. {
     
138. return false;
     
139. }
     
140. string laseMoveDirectory = string.Format("{0}\\{1}", targetDirectory, DirectoryHelper.GetDirectoryName(sourceDirectory));
     
141. while (Directory.Exists(laseMoveDirectory))
     
142. {
     
143. laseMoveDirectory = DirectoryHelper.Rename(laseMoveDirectory);
     
144. }
     
145. Directory.Move(sourceDirectory, laseMoveDirectory);
     
146. return true;
     
147. }
     
148. /// <summary>
     
149. /// 重新生成新的文件路径
     
150. /// </summary>
     
151. /// <param name="filePath"></param>
     
152. /// <returns></returns>
     
153. public static string Rename(string filePath)
     
154. {
     
155. if (string.IsNullOrWhiteSpace(filePath))
     
156. {
     
157. return string.Empty;
     
158. }
     
159. string lastDirName = DirectoryHelper.GetDirectoryName(filePath);
     
160. //重命名，则随机在原来文件名后面加几个随机数字进行组装成新的名字
     
161. Random random = new Random(System.DateTime.Now.Millisecond);
     
162. string randomData = random.Next().ToString();
     
163. //把原文件名的名字加上随机数，组装成新的文件名（避免重名）
     
164. string newlastDirName = lastDirName + randomData;
     
165. string newDirPath = string.Empty;
     
166. newDirPath = filePath.Substring(0, filePath.LastIndexOf("\\")) + "\\" + newlastDirName;
     
167. //返回新的路径
     
168. return newDirPath;
     
169. }
     
170. /// <summary>
     
171. /// 获取指定目录下的所有文件和文件夹大小
     
172. /// </summary>
     
173. /// <param name="path">目录路径</param>
     
174. /// <returns>string，返回所有文件夹名字</returns>
     
175. public static long GetDirectorySize(string path)
     
176. {
     
177. long dirSize = 0;
     
178. DirectoryInfo dir = new DirectoryInfo(path);
     
179. foreach (FileInfo file in dir.GetFiles())
     
180. dirSize += file.Length;
     
181. foreach (DirectoryInfo subdir in dir.GetDirectories())
     
182. dirSize += GetDirectorySize(subdir.FullName);
     
183. return dirSize;
     
184. }
     
185. }
     
186. }

复制代码

转自：http://www.jb51.net/article/46334.htm
这篇文章主要介绍了c#目录操作示例,包括获取目录名称、获取子目录、查询子目录、将原目录移动到目标目录等操作，大家参考使用吧

1. 
   
2. using System;
   
3. using System.Collections.Generic;
   
4. using System.Linq;
   
5. using System.Text;
   
6. using System.IO;
   
7. namespace Humep.FileWatcher
   
8. {
   
9. /// <summary>
   
10. ///
    
11. /// </summary>
    
12. public static class DirectoryHelper
    
13. {
    
14. /// <summary>
    
15. /// 初始化目录
    
16. /// </summary>
    
17. /// <param name="directory"></param>
    
18. /// <returns></returns>
    
19. public static bool CreateDirectory(string directory)
    
20. {
    
21. if (string.IsNullOrWhiteSpace(directory))
    
22. {
    
23. return false;
    
24. }
    
25. if (Directory.Exists(directory))
    
26. {
    
27. return true;
    
28. }
    
29. var dirInfo = Directory.CreateDirectory(directory);
    
30. return dirInfo != null;
    
31. }
    
32. 
    
33. /// <summary>
    
34. /// 根据当前日组合文件夹名称
    
35. /// </summary>
    
36. /// <param name="now"></param>
    
37. /// <returns></returns>
    
38. public static string BuildDateDirectoryName(DateTime dateTime)
    
39. {
    
40. return dateTime.ToString("yyyyMMdd");
    
41. }
    
42. /// <summary>
    
43. ///
    
44. /// </summary>
    
45. /// <returns></returns>
    
46. public static string BuildTodayDirectoryName()
    
47. {
    
48. return BuildDateDirectoryName(DateTime.Now);
    
49. }
    
50. /// <summary>
    
51. /// 获取目录名称
    
52. /// </summary>
    
53. /// <param name="directory"></param>
    
54. /// <returns></returns>
    
55. public static string GetDirectoryName(string directory)
    
56. {
    
57. if (!Directory.Exists(directory))
    
58. {
    
59. return string.Empty ;// DirectoryHelper.CreateDirectory(directory);
    
60. }
    
61. return new DirectoryInfo(directory).Name;
    
62. }
    
63. /// <summary>
    
64. /// 获取目录文件夹下的所有子目录
    
65. /// </summary>
    
66. /// <param name="directory"></param>
    
67. /// <param name="filePattern"></param>
    
68. /// <returns></returns>
    
69. public static List<string> FindSubDirectories(string directory, int maxCount)
    
70. {
    
71. List<string> subDirectories = new List<string>();
    
72. if (string.IsNullOrEmpty(directory))
    
73. {
    
74. return subDirectories;
    
75. }
    
76. if (maxCount <= 0)
    
77. {
    
78. return subDirectories;
    
79. }
    
80. string[] directories = Directory.GetDirectories(directory);
    
81. foreach (string subDirectory in directories)
    
82. {
    
83. if (subDirectories.Count == maxCount)
    
84. {
    
85. break;
    
86. }
    
87. subDirectories.Add(subDirectory);
    
88. }
    
89. return subDirectories;
    
90. }
    
91. public static List<string> FindSubDirectories(string directory)
    
92. {
    
93. return Directory.GetDirectories(directory, "*", SearchOption.AllDirectories).ToList<string>();
    
94. }
    
95. /// <summary>
    
96. /// 根据时间查询子目录
    
97. /// </summary>
    
98. /// <param name="directory"></param>
    
99. /// <param name="maxCount"></param>
    
100. /// <returns></returns>
     
101. public static List<string> FindSubDirectories(string directory, int maxCount, int days)
     
102. {
     
103. List<string> subDirectories = new List<string>();
     
104. if (string.IsNullOrEmpty(directory))
     
105. {
     
106. return subDirectories;
     
107. }
     
108. if (maxCount <= 0)
     
109. {
     
110. return subDirectories;
     
111. }
     
112. string[] directories = Directory.GetDirectories(directory);
     
113. DateTime lastTime = DateTime.Now.AddDays(-Math.Abs(days));
     
114. foreach (string subDirectory in directories)
     
115. {
     
116. if (subDirectories.Count == maxCount)
     
117. {
     
118. break;
     
119. }
     
120. DirectoryInfo dirInfo = new DirectoryInfo(subDirectory);
     
121. if (dirInfo.LastWriteTime >= lastTime)
     
122. {
     
123. subDirectories.Add(subDirectory);
     
124. }
     
125. }
     
126. return subDirectories;
     
127. }
     
128. /// <summary>
     
129. /// 将原目录移动到目标目录
     
130. /// </summary>
     
131. /// <param name="sourceDirectory"></param>
     
132. /// <param name="targetDirectory"></param>
     
133. /// <returns></returns>
     
134. public static bool MoveDirectory(string sourceDirectory, string targetDirectory)
     
135. {
     
136. if (string.IsNullOrEmpty(sourceDirectory) || string.IsNullOrEmpty(targetDirectory))
     
137. {
     
138. return false;
     
139. }
     
140. string laseMoveDirectory = string.Format("{0}\\{1}", targetDirectory, DirectoryHelper.GetDirectoryName(sourceDirectory));
     
141. while (Directory.Exists(laseMoveDirectory))
     
142. {
     
143. laseMoveDirectory = DirectoryHelper.Rename(laseMoveDirectory);
     
144. }
     
145. Directory.Move(sourceDirectory, laseMoveDirectory);
     
146. return true;
     
147. }
     
148. /// <summary>
     
149. /// 重新生成新的文件路径
     
150. /// </summary>
     
151. /// <param name="filePath"></param>
     
152. /// <returns></returns>
     
153. public static string Rename(string filePath)
     
154. {
     
155. if (string.IsNullOrWhiteSpace(filePath))
     
156. {
     
157. return string.Empty;
     
158. }
     
159. string lastDirName = DirectoryHelper.GetDirectoryName(filePath);
     
160. //重命名，则随机在原来文件名后面加几个随机数字进行组装成新的名字
     
161. Random random = new Random(System.DateTime.Now.Millisecond);
     
162. string randomData = random.Next().ToString();
     
163. //把原文件名的名字加上随机数，组装成新的文件名（避免重名）
     
164. string newlastDirName = lastDirName + randomData;
     
165. string newDirPath = string.Empty;
     
166. newDirPath = filePath.Substring(0, filePath.LastIndexOf("\\")) + "\\" + newlastDirName;
     
167. //返回新的路径
     
168. return newDirPath;
     
169. }
     
170. /// <summary>
     
171. /// 获取指定目录下的所有文件和文件夹大小
     
172. /// </summary>
     
173. /// <param name="path">目录路径</param>
     
174. /// <returns>string，返回所有文件夹名字</returns>
     
175. public static long GetDirectorySize(string path)
     
176. {
     
177. long dirSize = 0;
     
178. DirectoryInfo dir = new DirectoryInfo(path);
     
179. foreach (FileInfo file in dir.GetFiles())
     
180. dirSize += file.Length;
     
181. foreach (DirectoryInfo subdir in dir.GetDirectories())
     
182. dirSize += GetDirectorySize(subdir.FullName);
     
183. return dirSize;
     
184. }
     
185. }
     
186. }

复制代码