转换DateTime.Now到不同的时区 [英] Converting DateTime.Now To A Different Time Zone

问题描述

该代码已经工作很长时间了，但现在已经打破，当我试图通过DateTime.Now为outageEndDate参数：

This code has been working for a long time now but has broken now when I try to pass DateTime.Now as the outageEndDate parameter:

public Outage(DateTime outageStartDate, DateTime outageEndDate, Dictionary<string, string> weeklyHours, string province, string localProvince)
    {
        this.outageStartDate = outageStartDate;
        this.outageEndDate = outageEndDate;
        this.weeklyHours = weeklyHours;
        this.province = province;
        localTime = TimeZoneInfo.FindSystemTimeZoneById(timeZones[localProvince]);

        if (outageStartDate < outageEndDate)
        {
            TimeZoneInfo remoteTime = TimeZoneInfo.FindSystemTimeZoneById(timeZones[province]);
            outageStartDate = TimeZoneInfo.ConvertTime(outageStartDate, localTime, remoteTime);
            outageEndDate = TimeZoneInfo.ConvertTime(outageEndDate, localTime, remoteTime);

我就上线得到该错误消息是，Kind属性设置不正确的日期时间参数（outageEndDate）。我GOOGLE和SO检查的例子，但我真的不明白的错误消息。

The error message I am getting on the last line is that the Kind property is not set correctly on the DateTime parameter (outageEndDate). I've Googled and checked SO for examples but I don't really understand the error message.

任何建议表示赞赏。

问候

编辑 - 确切的错误信息是：

EDIT - The exact error message is:

The conversion could not be completed because the supplied DateTime did not have the Kind
property set correctly.  For example, when the Kind property is DateTimeKind.Local, the source
time zone must be TimeZoneInfo.Local.  Parameter name: sourceTimeZone

编辑：outageEndDate.Kind = UTC

outageEndDate.Kind = Utc

推荐答案

感谢澄清你的问题。

如果一个DateTime实例类是本地，那么 TimeZoneInfo.ConvertTime 将期望的第二个参数是你的计算机的本地时区

If the DateTime instance Kind is Local, then TimeZoneInfo.ConvertTime will expect the second parameter to be the local timezone of your computer.

如果DateTime的实例类是 UTC ，然后 TimeZoneInfo.ConvertTime 会期望是UTC时区的第二个参数。

If DateTime instance Kind is Utc, then TimeZoneInfo.ConvertTime will expect the second parameter to be the Utc timezone.

您需要outageEndDate转换为正确的时区第一，以防万一localProvice时区不匹配您的计算机上的时区。

You need to convert outageEndDate to the right timezone first, just in case the localProvice timezone doesn't match the timezone on your computer.

outageEndDate = TimeZoneInfo.ConvertTime(outageEndDate, localTime);

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