How to automatically delete files older than X in a folder

You can loop through the directory and check the time against a target value. For example, if you wanted to delete those older than 30 days, you could use:

public static void PurgeDirectory(string path)
{
    System.IO.DirectoryInfo info = new System.IO.DirectoryInfo(path);
    DateTime targetDate = DateTime.Now.AddDays(-30);

    foreach (System.IO.FileInfo fi in info.GetFiles())
    {
        if (fi.LastAccessTime > targetDate)
        {
            fi.Delete();
        }
    }
}

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