如何检查，如果当前时间是在时间框架之间？ [英] How can I check if the current time is between in a time frame?

问题描述

我有一个用户可以配置在非高峰时段运行的服务。他们有规定的时限，该服务可以运行的能力。

I have a service that user can configure to run during "off-peak" hours. They have the ability to set the time frame that the service can run.

例如：

用户A的工作原理8点至晚5，所以他们要安排应用至下午5:30和7:30之间运行。

User A works 8am-5pm, so they want to schedule the app to run between 5:30pm and 7:30am.

用户B工作9 pm-6am，所以他们安排应用上午6:30和下午8:30之间运行。

User B works 9pm-6am, so they schedule the app to run between 6:30am and 8:30 pm.

问题的关键是，虽然他们不是应用程序使用他们的计算机。

The point is that the app uses their computer while they are not.

鉴于当前时间的日期时间，开始日期时间和停止时间的DateTime，我怎么能检查电流之间开始和停止。

Given a DateTime of the current time, a DateTime of the start and a DateTime of the stop time, how can I check if current is between start and stop.

对于我来说最棘手的部分是时间可以跨午夜边界。

The tricky part for me is that the time can cross the midnight boundary.

推荐答案

如果的startTime 和结束时间重新present一个单一的时间间隔（它只会发生一次，而的startTime 和结束时间重新present日期和启动/停止的时间），那么它的话说

If startTime and endTime represent a single time interval (it will only happen once, and startTime and endTime represent the date and the time to start/stop), then it's as easy as saying

bool isTimeBetween = someTime >= startTime && someTime <= endTime;

如果这是一个反复出现的事件（每天都是这样，有的间隔内），您可以使用做比较的<一个href=\"http://msdn.microsoft.com/en-us/library/system.datetime.timeofday.aspx\"><$c$c>TimeOfDay属性。 （反复出现的情况是一个，你必须考虑的一个开始/停止跨越午夜）

If it's a recurring event (happens every day, during some interval), you can do comparisons using the TimeOfDay property. (The recurring case is the one where you have to consider a start/stop that crosses midnight)

static public bool IsTimeOfDayBetween(DateTime time, 
                                      TimeSpan startTime, TimeSpan endTime)
{
    if (endTime == startTime)
    {
        return true;   
    }
    else if (endTime < startTime)
    {
        return time.TimeOfDay <= endTime ||
            time.TimeOfDay >= startTime;
    }
    else
    {
        return time.TimeOfDay >= startTime &&
            time.TimeOfDay <= endTime;
    }

}

（注：此code假定，如果开始==结束，那么它涵盖了所有次你做了一个评论在另一个帖子这个效果。）

(Note: This code assumes that if start == end, then it covers all times. You made a comment to this effect on another post)

例如，要检查它是否是上午5点和下午9:30之间

For example, to check if it's between 5 AM and 9:30 PM

IsTimeOfDayBetween(someTime, new TimeSpan(5, 0, 0), new TimeSpan(21, 30, 0))

如果的startTime 和结束时间是的DateTime S，你可以说

If startTime and endTime are DateTimes, you could say

IsTimeOfDayBetween(someTime, startTime.TimeOfDay, endTime.TimeOfDay)

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