C#实现DateTime与Unix 时间戳（long）互转

/// <summary>
/// 将 DateTime 转换为 Unix 时间戳
/// </summary>
/// <param name="dateTime">需要转换的时间</param>
/// <returns>Unix 时间戳</returns>
public static long DateTimeToUnixTime(DateTime dateTime)
{
    return (long)(dateTime - TimeZoneInfo.ConvertTime(new DateTime(1970, 1, 1, 0, 0, 0), TimeZoneInfo.Local)).TotalSeconds;
}

 

/// <summary>
/// 将 Unix 时间戳转换为 DateTime
/// </summary>
/// <param name="timestamp">Unix 时间戳</param>
/// <returns>需要转换的时间</returns>
public static DateTime UnixTimeToDateTime(long timestamp)
{
    if (timestamp < 0)
        throw new ArgumentOutOfRangeException("timestamp is out of range");

    return TimeZoneInfo.ConvertTime(new DateTime(1970, 1, 1, 0, 0, 0), TimeZoneInfo.Local).AddSeconds(timestamp);
}