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);

    }
}