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

C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
5.Data Types
7.Date Time
8.Design Patterns
9.Development Class
11.File Stream
13.GUI Windows Form
14.Internationalization I18N
15.Language Basics
20.Regular Expressions
22.Services Event
24.Web Services
26.Windows Presentation Foundation
C# / C Sharp » Date Time » Date Time Util 

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);


Related examples in the same category
1.Gets the days between.
2.Return a unique identifier based on system's full date (yyyymmdd) and time (hhmissms).
3.Return a elapsed time in formatted string. (hh:mm:ss:mi)
4.Screen for holidays
5.Return the previous business date of the date specified.
6.Return the previous or next business day of the date specified.
7.Return true if the number of seconds has elapsed since the last check
8.Add Business Days
9.Get Day Of Week
10.Add week to a DateTime
11.Get the quarter number for the DateTime
12.Get the week number
13.Date and time To Words
14.Return the number of milliseconds since the Unix epoch (1 Jan., 1970 UTC) for a given DateTime value.
15.Get Elapsed Time
16.Is given DateTime Weekend
17.Converts a Date to a string using relative time.
18.Gets the date from Year integer
19.Gets the date from Year and Month integer
20.Gets the date from Year, Month and Day integer
21.Gets the days in month.
22.Gets the days in year.
23.Gets the end of day.
24.Gets the end of week.
25.Gets the start of month.
26.Gets the end of month.
27.Gets the end of quarter.
28.Gets the end of year.
29.Gets the months between.
30.Date Time To String
31.Update text within a file by replacing a substring within the file.
32.Get Date Difference in String
33.Converts the specified date and time strings to their DateTime equivalent representation.
34.Create Expires In String
35.Compares 2 dates ignoring the milliseconds
36.Calculate date, based on specified time and unit
37.Gets the ordinal suffix for a given date
38.Generate the timestamp of the provided DateTime
39.Converts the date to start from midnight.
40.Converts the date to end at midnight.
41.Convert time from seconds to ticks
42.Generate the UNIX style timestamp for DateTime.UtcNow
43.Parse DateTime from "2011/5/2 14:40"  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.