blocks|key|716018|text|如果需要将字符串转换为DateTime，可以尝试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716019|DateTime+dt+=+DateTime.Parse("01:00+PM");+//+No+error+checking|code-block|syntax|javascript|716020|或(具有错误检查功能)|716021|DateTime+dt;
bool+res+=+DateTime.TryParse("01:00+PM",+out+dt);|716022|变量dt包含您的datetime，因此您可以编写它|offset|length|style|CODE|716023|dt.ToString("HH:mm");|716024|最后一个方法适用于你拥有的每个DateTime变量，所以如果你还有一个DateTime，你可以这样写出来。|716025|entityMap^0|0|0|0|0|2|2|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@$M|11|N|12|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

If you need to convert a string to a DateTime you could try

<pre><code>DateTime dt = DateTime.Parse("01:00 PM"); // No error checking
</code></pre>

or (with error checking)

<pre><code>DateTime dt;
bool res = DateTime.TryParse("01:00 PM", out dt);
</code></pre>

Variable <code>dt</code> contains your datetime, so you can write it

<pre><code>dt.ToString("HH:mm");
</code></pre>

Last one works for every DateTime var you have, so if you still have a DateTime, you can write it out in this way.

blocks|key|716041|text|您将希望熟悉Custom+Date+and+Time+Format+Strings。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|716042|DateTime+localTime+=+DateTime.Now;

//+24+hour+format+--+use+'H'+or+'HH'
string+timeString24Hour+=+localTime.ToString("HH:mm",+CultureInfo.CurrentCulture);|code-block|syntax|javascript|716043|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx^0|6|Z|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You'll want to become familiar with <a href="http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx" rel="noreferrer">Custom Date and Time Format Strings</a>.

<pre><code>DateTime localTime = DateTime.Now;

// 24 hour format -- use 'H' or 'HH'
string timeString24Hour = localTime.ToString("HH:mm", CultureInfo.CurrentCulture);
</code></pre>

blocks|key|500665|text|将字符串转换为DateTime，您可以尝试|type|unstyled|depth|inlineStyleRanges|entityRanges|data|500666|++++DateTime+timeValue+=+Convert.ToDateTime("01:00+PM");
++++Console.WriteLine(timeValue.ToString("HH:mm"));|code-block|syntax|javascript|500667|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|$]]

Convert a string to a DateTime, you could try

<pre><code> DateTime timeValue = Convert.ToDateTime("01:00 PM");
 Console.WriteLine(timeValue.ToString("HH:mm"));
</code></pre>

blocks|key|716066|text|int+hour+=+your+hour+value;
int+min+=+your+minute+value;
String+ampm+=+your+am/pm+value;

hour+=+ampm+==+"AM"+?+hour+:+(hour+%25+12)+%2B+12;+//convert+12-hour+time+to+24-hour

var+dateTime+=+new+DateTime(0,0,0,+hour,+min,+0);
var+timeString+=+dateTime.ToString("HH:mm");|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|716067|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>int hour = your hour value;
int min = your minute value;
String ampm = your am/pm value;

hour = ampm == "AM" ? hour : (hour % 12) + 12; //convert 12-hour time to 24-hour

var dateTime = new DateTime(0,0,0, hour, min, 0);
var timeString = dateTime.ToString("HH:mm");
</code></pre>

blocks|key|716167|text|通过以下代码将DateTime从12小时转换为24小时。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|716168|string+currentDateString+=+DateTime.Now.ToString("dd-MMM-yyyy+h:mm+tt");
DateTime+currentDate+=+Convert.ToDateTime(currentDateString);
Console.WriteLine("String+Current+Date:+"+%2B+currentDateString);
Console.WriteLine("Converted+Date:+"+%2B+currentDate.ToString("dd-MMM-yyyy+HH:mm"));|code-block|syntax|javascript|716169|无论何时你想要的时间应该被显示in24小时使用格式"HH“|716170|有关更多详细信息，请参阅以下链接：Custom+Date+and+Time+Format+Strings|offset|length|716171|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx^0|0|0|0|H|Z|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|X|8|@]|9|@$K|Y|L|Z|1|10]]|A|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Go through following code to convert the DateTime from 12 hrs to 24 hours.

<pre><code>string currentDateString = DateTime.Now.ToString("dd-MMM-yyyy h:mm tt");
DateTime currentDate = Convert.ToDateTime(currentDateString);
Console.WriteLine("String Current Date: " + currentDateString);
Console.WriteLine("Converted Date: " + currentDate.ToString("dd-MMM-yyyy HH:mm"));
</code></pre>

Whenever you want the time should be displayed in24 hours use format "HH"

You can refer following link for further details:
<a href="http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx" rel="noreferrer">Custom Date and Time Format Strings</a>

blocks|key|716206|text|using+System;

class+Solution
{
++++static+string+timeConversion(string+s)
++++{
++++++++return+DateTime.Parse(s).ToString("HH:mm");
++++}

++++static+void+Main(string[]+args)
++++{
++++++++Console.WriteLine(timeConversion("01:00+PM"));
++++++++Console.Read();
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|716207|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>using System;

class Solution
{
 static string timeConversion(string s)
 {
 return DateTime.Parse(s).ToString("HH:mm");
 }

 static void Main(string[] args)
 {
 Console.WriteLine(timeConversion("01:00 PM"));
 Console.Read();
 }
}
</code></pre>

blocks|key|716089|text|您可以使用ParseExact()方法来获取DateTime对象。然后，您可以使用该DateTime对象的ToString()方法将字符串转换为所需的内容，如here所示。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|716090|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx|1|https://stackoverflow.com/questions/1026841/how-to-get-only-time-from-date-time^0|5|C|0|27|4|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

You can use the <a href="http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx" rel="nofollow noreferrer">ParseExact()</a> method to obtain a DateTime object. You can then use the ToString() method of that DateTime object to convert the string to what ever you need as shown <a href="https://stackoverflow.com/questions/1026841/how-to-get-only-time-from-date-time">here</a>.

blocks|key|716229|text|using+System;

public+class+Program
{
++++public+static+string+ConvertFrom12To24HoursFormat(string+inputTime)
++++{
++++++++return+DateTime.Parse(inputTime).ToString("hh:mm");
++++}

++++public+static+void+Main(string[]+args)
++++{
++++++++Console.WriteLine(ConvertFrom12To24HoursFormat("01:05+pm"));
++++}
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|716230|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>using System;

public class Program
{
 public static string ConvertFrom12To24HoursFormat(string inputTime)
 {
 return DateTime.Parse(inputTime).ToString(&quot;hh:mm&quot;);
 }

 public static void Main(string[] args)
 {
 Console.WriteLine(ConvertFrom12To24HoursFormat(&quot;01:05 pm&quot;));
 }
}
</code></pre>

blocks|key|500602|text|你可以使用区域性来解析和格式化你的字符串，例如|type|unstyled|depth|inlineStyleRanges|entityRanges|data|500603|var+cultureSource+=+new+CultureInfo("en-US",+false);
var+cultureDest+=+new+CultureInfo("de-DE",+false);

var+source+=+"01:00+pm";

var+dt+=+DateTime.Parse(source,+cultureSource);
Console.WriteLine(dt.ToString("t",+cultureDest));|code-block|syntax|javascript|500604|这将打印13:00|offset|length|style|CODE|500605|entityMap^0|0|0|4|5|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You may use Cultures to parse and format your string, eg

<pre><code>var cultureSource = new CultureInfo("en-US", false);
var cultureDest = new CultureInfo("de-DE", false);

var source = "01:00 pm";

var dt = DateTime.Parse(source, cultureSource);
Console.WriteLine(dt.ToString("t", cultureDest));
</code></pre>

This prints <code>13:00</code>

I need to convert 12 hours format time (am/pm) to 24 hours format time, e.g. 01:00 PM to 13:00 using C#. How can I convert it?

Convert AM/PM time to 24 hours format?

我需要使用C#将12小时格式时间(上午/下午)转换为24小时格式时间，例如下午01:00到13:00。我如何转换它？

问是否将AM/PM时间转换为24小时格式？
EN

回答 9

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问是否将AM/PM时间转换为24小时格式？EN

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问是否将AM/PM时间转换为24小时格式？
EN