C#从1970年开始到现在时间的总秒数
TimeSpan timeSpan = (DateTime.UtcNow - new DateTime(1970, 1, 1)); string timeStamp = ((int)timeSpan.TotalSeconds).ToString();
TimeSpan timeSpan = (DateTime.UtcNow - new DateTime(1970, 1, 1)); string timeStamp = ((int)timeSpan.TotalSeconds).ToString();