迭代删除过期文件及文件夹代码,CSharp代码库,德仔网

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【CSharp】迭代删除过期文件及文件夹

作者:zhensoft163 / 发布于2014/4/10/ 502

迭代删除过期文件及文件夹

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml.Linq;
using System.Linq.Expressions;
using System.IO;
/// <summary>
/// Summary description for AutoDeleteBackupFile
/// </summary>
public class AutoDeleteBackupFile
{
public AutoDeleteBackupFile()
{
//
// TODO: Add constructor logic here
//
}
 public void DeleteBKFile()
 {
 var interval = 1;//auto delete interval is one day
 var now = DateTime.Now;

//路径及文件类型都可选
 var allRecords = Directory.GetDirectories(@"D:/Back_up", "*.txt", SearchOption.TopDirectoryOnly);


 var records = (from dir in allRecords
 let record = Directory.GetCreationTime(dir)
 let timeSpan = now - record.AddDays(interval)
 where timeSpan.Days > 0 || timeSpan.Hours > 0 || timeSpan.Minutes > 0 || timeSpan.Seconds > 0
 select dir).ToArray();
 foreach (var record in records)
 {
 DeleteFolder(record);
 }
 }

 public void DeleteFolder(string dir)
 {
 foreach (string d in Directory.GetFileSystemEntries(dir))
 {
 if (File.Exists(d))
 {
 FileInfo file = new FileInfo(d);
 if (file.Attributes.ToString().IndexOf("ReadOnly") != -1)
 {
 file.Attributes = FileAttributes.Normal;
 }
 file.Delete();
 }
 else
 {
 DeleteFolder(d);
 }
 }
 Directory.Delete(dir);
 }
}

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