blocks|key|607791|text|如果打开时间晚于关闭时间，则反转测试。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|607792|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

If the opening time is later than the closing time, then reverse your test.

blocks|key|637681|text|我能想到的最简单的解决方案是检查所列出的关闭时间是否小于开放时间并添加24小时，并根据该值进行检查。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|637682|isOpen+=+(NOW+>+OpenTime+AND+NOW+<+(ClosingTime+<+OpeningTime+?+ClosingTime+%2B+24.00+:+ClosingTime)|code-block|syntax|javascript|637683|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The easiest solution I can think of would be to check if the close time listed is less than the open time and add 24 hours, and check against that value

<pre><code>isOpen = (NOW &gt; OpenTime AND NOW &lt; (ClosingTime &lt; OpeningTime ? ClosingTime + 24.00 : ClosingTime)
</code></pre>

blocks|key|637700|text|如果我对此有正确的理解，那么有以下算法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|637701|当开放时间小于关闭时间时：isOpen+=+now+>+openTime+&&+now+<+closeTime。|offset|length|style|CODE|637702|否则，isOpen+=+now+>+openTime+%7C%7C+now+<+closeTime。|637703|TimeSpan+nowTime+=+TimeSpan.FromHours(11);
TimeSpan+openTime+=+TimeSpan.FromHours(8);
TimeSpan+closeTime+=+TimeSpan.FromHours(2);

bool+isOpened+=+openTime+<+closeTime
++++++++++++++++++++?+(nowTime+>+openTime+&&+nowTime+<+closeTime)
++++++++++++++++++++:+(nowTime+>+openTime+%7C%7C+nowTime+<+closeTime);|code-block|syntax|javascript|637704|注意：TimeSpan结构用于时间间隔表示，但也可以使用double+(通过简单替换)。|637705|entityMap^0|0|D|16|0|3|16|0|0|3|8|S|6|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|W|8|@$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|J|3|K|5|L|7|Z|8|@]|9|@]|A|$M|N]]|$1|O|3|P|5|6|7|10|8|@$D|11|E|12|F|G]|$D|13|E|14|F|G]]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|R|$]]

If I've understood it right there is the following algorithm:

When open time is less than close time: <code>isOpen = now &gt; openTime &amp;&amp; now &lt; closeTime</code>.

Otherwise, <code>isOpen = now &gt; openTime || now &lt; closeTime</code>.

<pre><code>TimeSpan nowTime = TimeSpan.FromHours(11);
TimeSpan openTime = TimeSpan.FromHours(8);
TimeSpan closeTime = TimeSpan.FromHours(2);

bool isOpened = openTime &lt; closeTime
 ? (nowTime &gt; openTime &amp;&amp; nowTime &lt; closeTime)
 : (nowTime &gt; openTime || nowTime &lt; closeTime);
</code></pre>

Note: <code>TimeSpan</code> struct has been used for time interval representation, but <code>double</code> may be used also (by simple replacing).

blocks|key|607860|text|像这样的东西会对你有好处：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|607861|class+Company
{
++public+string+++Name+++++++++{+get+;+set+;+}

++//+represents+the+time-of-day+at+which+the+company+opens+(e.g.+08:00,+14:00,+etc.)
++public+TimeSpan+OpensAtTime++{+get+;+set+;+}

++//+represents+the+time-of-day+at+which+the+company+closes+(e.g.17:00,+08:00,+etc.+)
++public+TimeSpan+ClosesAtTime+{+get+;+set+;+}

++public+bool+IsOpen()
++{
++++DateTime+instant++++++++++=+DateTime.Now+;
++++DateTime+Today++++++++++++=+instant.Date+;
++++TimeSpan+totalOpenHours+++=+(+this.ClosesAtTime+-+this.OpensAtTime+).Duration()+;
++++DateTime+openTimeToday++++=+Today+%2B+this.OpensAtTime+;
++++DateTime+closingTimeToday+=+openTimeToday+%2B+totalOpenHours+;
++++bool+++++isOpen+++++++++++=+instant+>=+openTime+&&+instant+<=+closingTime+;

++++return+isOpen+;
++}

}|code-block|syntax|javascript|607862|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Something like this will do you:

<pre><code>class Company
{
 public string Name { get ; set ; }

 // represents the time-of-day at which the company opens (e.g. 08:00, 14:00, etc.)
 public TimeSpan OpensAtTime { get ; set ; }

 // represents the time-of-day at which the company closes (e.g.17:00, 08:00, etc. )
 public TimeSpan ClosesAtTime { get ; set ; }

 public bool IsOpen()
 {
 DateTime instant = DateTime.Now ;
 DateTime Today = instant.Date ;
 TimeSpan totalOpenHours = ( this.ClosesAtTime - this.OpensAtTime ).Duration() ;
 DateTime openTimeToday = Today + this.OpensAtTime ;
 DateTime closingTimeToday = openTimeToday + totalOpenHours ;
 bool isOpen = instant &gt;= openTime &amp;&amp; instant &lt;= closingTime ;

 return isOpen ;
 }

}
</code></pre>

blocks|key|1802243|text|您给出的表达式仅在OpenTime小于关闭时间时应用，因此：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1802244|isOpen+=+(OpenTime+<+ClosingTime+AND+NOW+>=+OpenTime+AND+NOW+<+ClosingTime)+OR+(NOW+>=+OpenTime+OR+NOW+<+ClosingTime)|code-block|syntax|javascript|1802245|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The expression you gave applies only when OpenTime is less than closing time, so:

<pre><code>isOpen = (OpenTime &lt; ClosingTime AND NOW &gt;= OpenTime AND NOW &lt; ClosingTime) OR (NOW &gt;= OpenTime OR NOW &lt; ClosingTime)
</code></pre>

I have many companies each one have a opening date and a closing date ex :

<pre><code>Company Open Close
</code></pre>

<hr>

<pre><code>A 08.00 22.00 (close in the **same** day)
B 10.00 02.00 (close in the **second** day)
C 14.00 03.00 (close in the **second** day)
</code></pre>

On the web page the user must see a list of the companies and show the status of each one (open or close) depending on the current time (SERVER TIME)

THE PROBLEM :
when the company open and close in the same day ( A ) it's easy to get the status
in the following algorithm : <code>isOpen = (NOW &gt; OpenTime AND NOW &lt; ClosingTime)</code>
, but if the company open in day 1 and close in day 2 ( B , C ) if the user check the page at 1.00 the company B will appear closed (because <code>(1.00 &gt; 10.00 AND 1.00 &lt; 02.00)</code> is False ) but in real time its opened.

How can I resolve this issue (when the closing time day is different than the opening time day)

Working with date in C#

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有很多公司，每一家公司都有开业日期和截止日期，例如：Company  Open   CloseA        08.00  22.00     (close in the **same** day)B        10.00  02.00     (close in the **second** day)C   ...

问在C#中使用date
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