int UTCSecond = (int)((DateTimeOffset)DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Local)).ToUnixTimeSeconds();

DateTime time = DateTimeOffset.FromUnixTimeSeconds(UTCSecond).DateTime;

Console.WriteLine("当前utc:{0},秒数:{1},换算时间:{2}", DateTimeOffset.Now, UTCSecond, time.ToString("F"));

UTCSecond = Q.Helper.TimeHelper.ToUTCSecond(DateTime.Now);

time = DateTimeOffset.FromUnixTimeSeconds(UTCSecond).DateTime;

Console.WriteLine("当前utc:{0},秒数:{1},换算时间:{2}", DateTimeOffset.Now, UTCSecond, time.ToString("F"));

Console.Read();

 

 

 

QCOMMON请使用NUGET包管理器搜索安装 QCommon

基本原理如下

 

/// <summary>

/// UTC时间

/// </summary>

static readonly DateTime UTC = TimeZoneInfo.ConvertTimeToUtc(new DateTime(1970, 1, 1), TimeZoneInfo.Utc);

/// <summary>

/// 时间转UTC秒

/// </summary>

/// <param name="dateTime">时间（当前时区）</param>

/// <returns>UTC秒</returns>

public static int ToUTCSecond(this DateTime dateTime)

{

return (int)dateTime.ToUniversalTime().Subtract(UTC).TotalSeconds;

}

 

/// <summary>

/// UTC秒转当地时间

/// </summary>

/// <param name="second">秒数</param>

/// <returns>当时时间</returns>

public static DateTime ToDateTime(this int second)

{

return UTC.AddSeconds(second).ToLocalTime();

}