Unix to DateTime to Unix

If you need to convert from .NET DateTime to Unix datetime and back, here's how:

/// <summary>
/// Converts a unix datetime to C# DateTime
/// </summary>
/// <param name="unixTimeStamp"></param>
/// <returns></returns>
public static DateTime UnixTimeStampToDateTime(double unixTimeStamp)
{
    // Unix timestamp is seconds past epoch
    System.DateTime dtDateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
    dtDateTime = dtDateTime.AddSeconds(unixTimeStamp).ToUniversalTime();
    return dtDateTime;
}


/// <summary>
/// Converts C# DateTime to unix datetime
/// </summary>
/// <param name="dateTime"></param>
/// <returns></returns>
public static double DateTimeToUnixTimestamp(DateTime dateTime)
{
    return (dateTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc).ToUniversalTime()).TotalSeconds;
}

From here.

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