【 C# 时间戳 】TimeHelper

TimeHelper

    public static class TimeHelper
    {
        public static string GetCurrentTimestamp(bool millisecond = true)
        {
            return DateTime.Now.ToTimestamp(millisecond);
        }

        public static string ToTimestamp(this DateTime dateTime, bool millisecond = true)
        {
            return dateTime.ToTimestampLong(millisecond).ToString();
        }

        public static long ToTimestampLong(this DateTime dateTime, bool millisecond = true)
        {
            var ts = dateTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, 0);
            return millisecond ? Convert.ToInt64(ts.TotalMilliseconds) : Convert.ToInt64(ts.TotalSeconds);
        }

        public static DateTime ToDateTime(this string timestamp)
        {
            var tz = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1, 0, 0, 0, 0));
            return timestamp.Length == 13
                ? tz.AddMilliseconds(Convert.ToInt64(timestamp))
                : tz.AddSeconds(Convert.ToInt64(timestamp));
        }
    }

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