using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO; namespace Humep.FileWatcher {     /// <summary>     ///     /// </summary>     public static class DirectoryHelper     {         /// <summary>         /// 初始化目录         /// </summary>         /// <param name="directory"></param>         /// <returns></returns>         public static bool CreateDirectory(string directory)         {             if (string.IsNullOrWhiteSpace(directory))             {                 return false;             }             if (Directory.Exists(directory))             {                 return true;             }             var dirInfo = Directory.CreateDirectory(directory);             return dirInfo != null;         }         /// <summary>         /// 根据当前日组合文件夹名称         /// </summary>         /// <param name="now"></param>         /// <returns></returns>         public static string BuildDateDirectoryName(DateTime dateTime)         {             return dateTime.ToString("yyyyMMdd");         }         /// <summary>         ///         /// </summary>         /// <returns></returns>         public static string BuildTodayDirectoryName()         {             return BuildDateDirectoryName(DateTime.Now);         }         /// <summary>         /// 获取目录名称         /// </summary>         /// <param name="directory"></param>         /// <returns></returns>         public static string GetDirectoryName(string directory)         {             if (!Directory.Exists(directory))             {                 return string.Empty ;// DirectoryHelper.CreateDirectory(directory);             }             return new DirectoryInfo(directory).Name;         }         /// <summary>         /// 获取目录文件夹下的所有子目录         /// </summary>         /// <param name="directory"></param>         /// <param name="filePattern"></param>         /// <returns></returns>         public static List<string> FindSubDirectories(string directory, int maxCount)         {             List<string> subDirectories = new List<string>();             if (string.IsNullOrEmpty(directory))             {                 return subDirectories;             }             if (maxCount <= 0)             {                 return subDirectories;             }             string[] directories = Directory.GetDirectories(directory);             foreach (string subDirectory in directories)             {                 if (subDirectories.Count == maxCount)                 {                     break;                 }                 subDirectories.Add(subDirectory);             }             return subDirectories;         }         public static List<string> FindSubDirectories(string directory)         {             return Directory.GetDirectories(directory, "*", SearchOption.AllDirectories).ToList<string>();         }         /// <summary>         /// 根据时间查询子目录         /// </summary>         /// <param name="directory"></param>         /// <param name="maxCount"></param>         /// <returns></returns>         public static List<string> FindSubDirectories(string directory, int maxCount, int days)         {             List<string> subDirectories = new List<string>();             if (string.IsNullOrEmpty(directory))             {                 return subDirectories;             }             if (maxCount <= 0)             {                 return subDirectories;             }             string[] directories = Directory.GetDirectories(directory);             DateTime lastTime = DateTime.Now.AddDays(-Math.Abs(days));             foreach (string subDirectory in directories)             {                 if (subDirectories.Count == maxCount)                 {                     break;                 }                 DirectoryInfo dirInfo = new DirectoryInfo(subDirectory);                 if (dirInfo.LastWriteTime >= lastTime)                 {                     subDirectories.Add(subDirectory);                 }             }             return subDirectories;         }         /// <summary>         /// 将原目录移动到目标目录         /// </summary>         /// <param name="sourceDirectory"></param>         /// <param name="targetDirectory"></param>         /// <returns></returns>         public static bool MoveDirectory(string sourceDirectory, string targetDirectory)         {             if (string.IsNullOrEmpty(sourceDirectory) || string.IsNullOrEmpty(targetDirectory))             {                 return false;             }             string laseMoveDirectory = string.Format("{0}\\{1}", targetDirectory, DirectoryHelper.GetDirectoryName(sourceDirectory));             while (Directory.Exists(laseMoveDirectory))             {                 laseMoveDirectory = DirectoryHelper.Rename(laseMoveDirectory);             }             Directory.Move(sourceDirectory, laseMoveDirectory);             return true;         }         /// <summary>         /// 重新生成新的文件路径         /// </summary>         /// <param name="filePath"></param>         /// <returns></returns>         public static string Rename(string filePath)         {             if (string.IsNullOrWhiteSpace(filePath))             {                 return string.Empty;             }             string lastDirName = DirectoryHelper.GetDirectoryName(filePath);             //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             Random random = new Random(System.DateTime.Now.Millisecond);             string randomData = random.Next().ToString();             //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）             string newlastDirName = lastDirName + randomData;             string newDirPath = string.Empty;             newDirPath = filePath.Substring(0, filePath.LastIndexOf("\\")) + "\\" + newlastDirName;             //返回新的路径             return newDirPath;         }         /// <summary>         /// 获取指定目录下的所有文件和文件夹大小         /// </summary>         /// <param name="path">目录路径</param>         /// <returns>string，返回所有文件夹名字</returns>         public static long GetDirectorySize(string path)         {             long dirSize = 0;             DirectoryInfo dir = new DirectoryInfo(path);             foreach (FileInfo file in dir.GetFiles())                 dirSize += file.Length;             foreach (DirectoryInfo subdir in dir.GetDirectories())                 dirSize += GetDirectorySize(subdir.FullName);             return dirSize;         }     } }