Directory.SetLastWriteTimeUtc Method

// This sample shows the differences between dates from methods that use 
//coordinated universal time (UTC) format and those that do not. 
using System;
using System.IO;

namespace IOSamples
{
  public class DirectoryUTCTime
  {
    public static void Main()
    {
	// Set the directory. 
      string n = @"C:\test\newdir";
		//Create two variables to use to set the time.
	  DateTime dtime1 = new DateTime(2002, 1, 3);
	  DateTime dtime2 = new DateTime(1999, 1, 1);

	//Create the directory. 
	  try
	  {
		  Directory.CreateDirectory(n);
	  }
	  catch (IOException e)
	  {
		  Console.WriteLine(e);
	  }

	//Set the creation and last access times to a variable DateTime value.
	  Directory.SetCreationTime(n, dtime1);
	  Directory.SetLastAccessTimeUtc(n, dtime1);

		// Print to console the results.
	  Console.WriteLine("Creation Date: {0}", Directory.GetCreationTime(n));
	  Console.WriteLine("UTC creation Date: {0}", Directory.GetCreationTimeUtc(n));
	  Console.WriteLine("Last write time: {0}", Directory.GetLastWriteTime(n));
	  Console.WriteLine("UTC last write time: {0}", Directory.GetLastWriteTimeUtc(n));
	  Console.WriteLine("Last access time: {0}", Directory.GetLastAccessTime(n));
	  Console.WriteLine("UTC last access time: {0}", Directory.GetLastAccessTimeUtc(n));

		//Set the last write time to a different value.
      Directory.SetLastWriteTimeUtc(n, dtime2);
	  Console.WriteLine("Changed last write time: {0}", Directory.GetLastWriteTimeUtc(n));
    }
  }
}
// Obviously, since this sample deals with dates and times, the output will vary 
// depending on when you run the executable. Here is one example of the output: 
//Creation Date: 1/3/2002 12:00:00 AM 
//UTC creation Date: 1/3/2002 8:00:00 AM 
//Last write time: 12/31/1998 4:00:00 PM 
//UTC last write time: 1/1/1999 12:00:00 AM 
//Last access time: 1/2/2002 4:00:00 PM 
//UTC last access time: 1/3/2002 12:00:00 AM 
//Changed last write time: 1/1/1999 12:00:00 AM