using System;

using System.Globalization;

using System.Text.RegularExpressions;

​

public class MillisecondDisplay

{

   public static void Main()

   {

      string dateString = "7/16/2008 8:32:45.123 AM";

      try

      {

         DateTime dateValue = DateTime.Parse(dateString);

         DateTimeOffset dateOffsetValue = DateTimeOffset.Parse(dateString);

         // Display Millisecond component alone.

         Console.WriteLine("Millisecond component only: {0}", 

                           dateValue.ToString("f"));

         Console.WriteLine("Millisecond component only: {0}", 

                           dateOffsetValue.ToString("fff"));

         // Display Millisecond component with full date and time.

         Console.WriteLine("Date and Time with Milliseconds: {0}", 

                           dateValue.ToString("MM/dd/yyyy hh:mm:ss.fff tt"));                        

         Console.WriteLine("Date and Time with Milliseconds: {0}", 

                           dateOffsetValue.ToString("MM/dd/yyyy hh:mm:ss.f tt"));

         // Append millisecond pattern to current culture's full date time pattern

         string fullPattern = DateTimeFormatInfo.CurrentInfo.FullDateTimePattern;

         fullPattern = Regex.Replace(fullPattern, "(:ss|:s)", "$1.fff");

         // Display Millisecond component with modified full date and time pattern.

         Console.WriteLine("Modified full date time pattern: {0}", 

                           dateValue.ToString(fullPattern));

         Console.WriteLine("Modified full date time pattern: {0}",

                           dateOffsetValue.ToString(fullPattern));

      }

      catch (FormatException)

      {

         Console.WriteLine("Unable to convert {0} to a date.", dateString);

      }

   }

}

// The example displays the following output if the current culture is en-US:

//    Millisecond component only: 126

//    Millisecond component only: 126

//    Date and Time with Milliseconds: 07/16/2008 08:32:45.126 AM

//    Date and Time with Milliseconds: 07/16/2008 08:32:45.126 AM

//    Modified full date time pattern: Wednesday, July 16, 2008 8:32:45.126 AM

//    Modified full date time pattern: Wednesday, July 16, 2008 8:32:45.126 AM