use the FromFileTime() method to convert an operating system file timestamp to a DateTime
using System; class MainClass { public static void Main() { DateTime myDateTime10 = new DateTime(2004, 1, 15, 23, 2, 5); long myFileTime = myDateTime10.ToFileTime(); DateTime myDateTime11 = DateTime.FromFileTime(myFileTime); Console.WriteLine("DateTime.FromFileTime() = " + myDateTime11); } }