Delete files older than 3 months old in a directory using .NET

Question

I would like to know (using C#) how I can delete files in a certain directory older than 3 months, but I guess the date period could be flexible.

Just to be clear:

Answer 1

            system.IO;

             List DeletePath = new List();
            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);
                }
            }

use in page load or webservice or any other use.

My concept is evrry 7 day i have to delete folder file without using DB