调用: ListFiles(new DirectoryInfo(source));  /// <summary>/// //递归遍历所有文件包括子文件夹下的文件 并对word excel pdf文件进行复制到目标路径/// </summary>/// <param name="info"></param>private void ListFiles(FileSystemInfo info){if (!info.Exists) { return; }DirectoryInfo dir = info as DirectoryInfo;//不是目录 if (dir == null) { return; }FileSystemInfo[] files = dir.GetFileSystemInfos();for (int i = 0; i < files.Length; i++){FileInfo file = files[i] as FileInfo;//是文件 if (file != null){string[] arr = file.Name.Split(new char[] { '.' });arr[arr.Length - 1] = arr[arr.Length - 1].ToLower();if (arr[arr.Length - 1] == "doc" || arr[arr.Length - 1] == "docx"){#region 每扫描到一个word文件 存储到lst里面去FilesModelRepostory fileModel = new FilesModelRepostory();fileModel.ID = Guid.NewGuid().ToString("N");fileModel.FileName = file.Name;fileModel.FileType =FileType.Word;AddJob(fileModel);#endregioncount++;}if (arr[arr.Length - 1] == "xls" || arr[arr.Length - 1] == "xlsx"){#region 每扫描到一个Excel文件 存储到lst里面去FilesModelRepostory fileModel = new FilesModelRepostory();fileModel.ID = Guid.NewGuid().ToString("N");fileModel.FileName = file.Name;fileModel.FileType = FileType.Excel;AddJob(fileModel);#endregioncount++;}if (arr[arr.Length - 1] == "pdf"){#region 每扫描到一个pdf文件 存储到lst里面去FilesModelRepostory fileModel = new FilesModelRepostory();fileModel.ID = Guid.NewGuid().ToString("N");fileModel.FileName = file.Name;fileModel.FileType =FileType.Pdf;AddJob(fileModel);#endregioncount++;}}//对于子目录，进行递归调用 else{ListFiles(files[i]);}}}