DirectInfo.GetFiles返回数组的默认排序

来源：互联网发布：mac os iso下载编辑：程序博客网时间：2024/05/22 14:26

NTFS和CDFS下，是按照字母顺序，而FAT下，按照文件创建时间顺序

  1 using System;  2 using System.Collections;  3 using System.IO;  4   5 namespace ConsoleApplication1  6 {  7     /// <summary>  8     /// 文件排序类  9     /// </summary> 10     public class FileSort : IComparer 11     { 12         private FileOrder _fileorder; 13         private FileAsc _fileasc; 14  15         /// <summary> 16         /// 构造函数 17         /// </summary> 18         public FileSort() 19             : this(FileOrder.Name, FileAsc.Asc) 20         { } 21  22         /// <summary> 23         /// 构造函数 24         /// </summary> 25         /// <param name="fileorder"></param> 26         public FileSort(FileOrder fileorder) 27             : this(fileorder, FileAsc.Asc) 28         { } 29  30         /// <summary> 31         /// 构造函数 32         /// </summary> 33         /// <param name="fileorder"></param> 34         /// <param name="fileasc"></param> 35         public FileSort(FileOrder fileorder, FileAsc fileasc) 36         { 37             _fileorder = fileorder; 38             _fileasc = fileasc; 39         } 40  41         /// <summary> 42         /// 比较函数 43         /// </summary> 44         /// <param name="x"></param> 45         /// <param name="y"></param> 46         /// <returns></returns> 47         public int Compare(object x, object y) 48         { 49             FileInfo file1 = x as FileInfo; 50             FileInfo file2 = y as FileInfo; 51             FileInfo file3; 52  53             if (file1 == null || file2 == null) 54                 throw new ArgumentException("参数不是FileInfo类实例."); 55  56             if (_fileasc == FileAsc.Desc) 57             { 58                 file3 = file1; 59                 file1 = file2; 60                 file2 = file3; 61             } 62  63             switch (_fileorder) 64             { 65                 case FileOrder.Name: 66                     return file1.Name.CompareTo(file2.Name); 67                 case FileOrder.Length: 68                     return file1.Length.CompareTo(file2.Length); 69                 case FileOrder.Extension: 70                     return file1.Extension.CompareTo(file2.Extension); 71                 case FileOrder.CreationTime: 72                     return file1.CreationTime.CompareTo(file2.CreationTime); 73                 case FileOrder.LastAccessTime: 74                     return file1.LastAccessTime.CompareTo(file2.LastAccessTime); 75                 case FileOrder.LastWriteTime: 76                     return file1.LastWriteTime.CompareTo(file2.LastWriteTime); 77                 default: 78                     return 0; 79             } 80         } 81     } 82  83     /// <summary> 84     /// 排序依据 85     /// </summary> 86     public enum FileOrder 87     { 88         /// <summary> 89         /// 文件名 90         /// </summary> 91         Name, 92         /// <summary> 93         /// 大小 94         /// </summary> 95         Length, 96         /// <summary> 97         /// 类型 98         /// </summary> 99         Extension,100         /// <summary>101         /// 创建时间102         /// </summary>103         CreationTime,104         /// <summary>105         /// 访问时间106         /// </summary>107         LastAccessTime,108         /// <summary>109         /// 修改时间110         /// </summary>111         LastWriteTime112     }113 114     /// <summary>115     /// 升序降序116     /// </summary>117     public enum FileAsc118     {119         /// <summary>120         /// 升序121         /// </summary>122         Asc,123         /// <summary>124         /// 降序125         /// </summary>126         Desc127     }128 }

 1 using System; 2 using System.IO; 3  4 namespace ConsoleApplication1 5 { 6     class Program 7     { 8         static void Main(string[] args) 9         {10             DirectoryInfo dirInfo = new DirectoryInfo(@"F:\abc");11             FileInfo[] lstFile = dirInfo.GetFiles();12             Array.Sort(lstFile, new FileSort(FileOrder.LastWriteTime)); //按修改日期升序排列13             foreach (FileInfo file in lstFile)14                 Console.WriteLine(file.Name);15 16             Console.Read();17 18         }19     }    20 }

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