使用.NET在目录中删除3个月以前的文件
我想知道（使用C＃）如何删除超过3个月的特定目录中的文件，但我想date可以灵活。
只是要清楚：我正在查找超过90天的文件，换句话说，应该保留90天以前创build的文件，删除所有其他文件。
像这样outta做这件事。
using System.IO; string[] files = Directory.GetFiles(dirName); foreach (string file in files) { FileInfo fi = new FileInfo(file); if (fi.LastAccessTime < DateTime.Now.AddMonths(-3)) fi.Delete(); } 这是一个1class的lambda：
Directory.GetFiles(dirName) .Select(f => new FileInfo(f)) .Where(f => f.LastAccessTime < DateTime.Now.AddMonths(-3)) .ToList() .ForEach(f => f.Delete());
对于那些喜欢过度使用LINQ。
(from f in new DirectoryInfo("C:/Temp").GetFiles() where f.CreationTime < DateTime.Now.Subtract(TimeSpan.FromDays(90)) select f ).ToList() .ForEach(f => f.Delete());
下面是如何获取目录中文件的创build时间的一个片段，并find3个月前（90天前确切）创build的文件：
DirectoryInfo source = new DirectoryInfo(sourceDirectoryPath); // Get info of each file into the directory foreach (FileInfo fi in source.GetFiles()) { var creationTime = fi.CreationTime; if(creationTime < (DateTime.Now- new TimeSpan(90, 0, 0, 0))) { fi.Delete(); } }
System.IO.File类的GetLastAccessTime属性应该有所帮助。
基本上你可以使用Directory.Getfiles（Path）来获取所有文件的列表。 之后，循环访问列表，并像Keithbuild议的那样调用GetLastAccessTim（）。
你只需要FileInfo – > CreationTime
而不仅仅是计算时差。
在app.config中，您可以保存文件必须被删除的时间的TimeSpan值
也检查出DateTime Subtract方法。
祝你好运
或者，如果您需要根据创builddate删除文件，则可以使用File.GetCreationTime方法 。
就是这样
foreach (FileInfo file in new DirectoryInfo("SomeFolder").GetFiles().Where(p => p.CreationTime < DateTime.Now.AddDays(-90)).ToArray()) File.Delete(file.FullName);
system.IO; List<string> DeletePath = new List<string>(); DirectoryInfo info = new DirectoryInfo(Server.MapPath("~\\TempVideos")); FileInfo[] files = info.GetFiles().OrderBy(p => p.CreationTime).ToArray(); foreach (FileInfo file in files) { DateTime CreationTime = file.CreationTime; double days = (DateTime.Now - CreationTime).TotalDays; if (days > 7) { string delFullPath = file.DirectoryName + "\\" + file.Name; DeletePath.Add(delFullPath); } } foreach (var f in DeletePath) { if (File.Exists(F)) { File.Delete(F); } }
在页面加载或webservice或任何其他用途使用。
我的概念是evrry 7天，我必须删除文件夹文件，而不使用数据库
//Store the number of days after which you want to delete the logs. int Days = 30; // Storing the path of the directory where the logs are stored. String DirPath = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase).Substring(6) + "\\Log(s)\\"; //Fetching all the folders. String[] objSubDirectory = Directory.GetDirectories(DirPath); //For each folder fetching all the files and matching with date given foreach (String subdir in objSubDirectory) { //Getting the path of the folder String strpath = Path.GetFullPath(subdir); //Fetching all the files from the folder. String[] strFiles = Directory.GetFiles(strpath); foreach (string files in strFiles) { //For each file checking the creation date with the current date. FileInfo objFile = new FileInfo(files); if (objFile.CreationTime <= DateTime.Now.AddDays(-Days)) { //Delete the file. objFile.Delete(); } } //If folder contains no file then delete the folder also. if (Directory.GetFiles(strpath).Length == 0) { DirectoryInfo objSubDir = new DirectoryInfo(subdir); //Delete the folder. objSubDir.Delete(); } }
我试试这个代码，它工作得很好，希望这个答案
namespace EraseJunkFiles { class Program { static void Main(string[] args) { DirectoryInfo yourRootDir = new DirectoryInfo(@"C:\yourdirectory\"); foreach (FileInfo file in yourRootDir.GetFiles()) if (file.LastWriteTime < DateTime.Now.AddDays(-90)) file.Delete(); } } }
try { FileInfo fi = new FileInfo(crop_name); if (fi.LastAccessTime < DateTime.Now.AddSeconds(-60)) { fi.Delete(); } } catch(Exception) { }
Private Sub DeleteZip（）
Dim eachFileInMydirectory As New DirectoryInfo("D:\Test\") Dim fileName As IO.FileInfo Try For Each fileName In eachFileInMydirectory.GetFiles If fileName.Extension.Equals("*.zip") AndAlso (Now - fileName.CreationTime).Days > 90 Then fileName.Delete() End If Next Catch ex As Exception WriteToLogFile("No Files older than 90 days exists be deleted " & ex.Message) End Try End Sub
