如何删除主目录里所有过期文件和过期空子目录

Question

有这么个需求，就是定期删除某个目录里的文件或者目录
1. 修改时间超过一周的文件，无论是在子目录下或者主目录下一律删除
2. 修改时间超过一周的子目录也删除，前提是该目录是一个空目录
代码如何写好呢？

Answer 1

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;namespace CSharp
{
    class Program
    {
        static void Main(string[] args)
        {            if (File.Exists(@"d:\\expect.txt"))
            {
                FileInfo fi = new FileInfo("d:\\expect.txt");
                Console.WriteLine(  fi.LastWriteTime);
            }
        }
    }
}

Answer 2

如下应该可以实现：
 public void DeleteDirectory(string vDestinationPath)
    {
        DirectoryInfo destinatioinDirec = new DirectoryInfo(vDestinationPath);
        //delete directory
        foreach (DirectoryInfo tempDirec in destinatioinDirec.GetDirectories())
        {
            if (tempDirec.LastWriteTime < DateTime.Now.AddDays(-7))
            {
                tempDirec.Delete();
                //tempDirec.Delete(true);
            }
        }
        //delete file
        foreach (FileInfo  tempFile in destinatioinDirec.GetFiles())
        {
            if (tempFile.LastWriteTime < DateTime.Now.AddDays(-7))
            {
                tempFile.Delete();
            }
        }
    }

Answer 3

public void DeleteDirectory(string vDestinationPath)
    {
        DirectoryInfo destinatioinDirec = new DirectoryInfo(vDestinationPath);
//delete file
        foreach (FileInfo  tempFile in destinatioinDirec.GetFiles())
        {
            if (tempFile.LastWriteTime < DateTime.Now.AddDays(-7))
            {
                tempFile.Delete();
            }
        }        //delete directory
        foreach (DirectoryInfo tempDirec in destinatioinDirec.GetDirectories())
        {
            if (tempDirec.LastWriteTime < DateTime.Now.AddDays(-7))
            {
               if(tempDirec.GetFiles().Length <=0)
                tempDirec.Delete();
                //tempDirec.Delete(true);
            }
        }
            }

Answer 4

遍历文件夹获取记文件的修改时间，根据时间判断是否为一周前，再删除文件或记录 
private void GetFolderInfo(string path) 
        { 
            if (Directory.Exists(path)) 
            { 
                if (Directory.GetFileSystemEntries(path).Length == 0) 
                { 
                  
                } 
                else 
                { 
                    string[] fileNames0 = Directory.GetFiles(path); 
                    foreach (string file in fileNames0) 
                    { 
                    
                    } 
                    string[] subdirectoryEntries = Directory.GetDirectories(path); 
                    foreach (string subdirectory in subdirectoryEntries)  
                    { 
                        GetFolderInfo(subdirectory); 
                    } 
                } 
            } 
        }