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Working with Unix epoch in .NET (changing between DateTime and time since epoch)

/ Published in: C#
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Tentative source shows conversion to/from microseconds.

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  1. private static readonly DateTime UnixEpoch = new DateTime(1970, 1, 1);
  2.         const double MicrosecondsInAMillisecond = 1e3;
  3.  
  4.         public static ulong ToHawkTime(this DateTime value)
  5.         {
  6.             double d = (value - UnixEpoch).TotalMilliseconds * MicrosecondsInAMillisecond;
  7.             return (ulong) d;
  8.         }
  9.  
  10.         public static DateTime ConvertFromHawkTime(this ulong value)
  11.         {
  12.             DateTime d = UnixEpoch + TimeSpan.FromMilliseconds(value/MicrosecondsInAMillisecond);
  13.             return d;
  14.         }

URL: http://blogs.msdn.com/brada/archive/2004/03/20/93332.aspx

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