Convert Unix Seconds : Date Time Util « Date Time « C# / C Sharp

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C# / C Sharp » Date Time » Date Time UtilScreenshots 
Convert Unix Seconds
#region License
// Copyright (c) 2007 James Newton-King
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,
// copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
// conditions:
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Text;
using System.Data.SqlTypes;

namespace Newtonsoft.Utilities.Time
  public static class DateTimeUtils
    public static readonly DateTime UnixEpoch = new DateTime(1970110000);

    public static DateTime ToSqlServerPrecision(DateTime value)
      SqlDateTime sqlValue = new SqlDateTime(value);

      return sqlValue.Value;

    public static DateTime ConvertUnixSeconds(long unixSeconds, long residualNanoseconds)
      DateTime actualDateTime = ConvertUnixSeconds(unixSeconds);

      long ticks = residualNanoseconds / 100;

      return actualDateTime.AddTicks(ticks);

    public static DateTime ConvertUnixSeconds(long unixSeconds)
      return UnixEpoch.AddSeconds(unixSeconds);

    public static string ToFileSortableDateTime(DateTime value)
      return value.ToString("yyyyMMdd'T'HHmmss", CultureInfo.CurrentCulture);

    public static DateTime FromFileSortableDateTime(string value)
      return DateTime.ParseExact(value, "yyyyMMdd'T'HHmmss", CultureInfo.CurrentCulture);

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