blocks|key|919890|text|您需要指定转换的区域性。默认情况下，它应该使用你的电脑的默认日期格式，但这并不总是有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|919891|关于为Convert.ToDateTime方法http://msdn.microsoft.com/en-us/library/9xk1h71t.aspx指定格式提供程序，您应该了解一下这一点|offset|length|919892|这是关于您需要创建以处理区域性的DateTimeFormatInfo对象：http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx|919893|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/9xk1h71t.aspx|1|http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx^0|0|N|1H|0|0|11|2C|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@$D|T|E|U|1|V]]|A|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$D|X|E|Y|1|Z]]|A|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

You need to specify the culture for the conversion. By default, it should be using the default date format for your PC but this doesn't always work.

You should take a look at this about specifying a format provider for the Convert.ToDateTime method <a href="http://msdn.microsoft.com/en-us/library/9xk1h71t.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/9xk1h71t.aspx</a>

and this about the DateTimeFormatInfo object you will need to create to handle the culture: <a href="http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.aspx</a>

blocks|key|4957315|text|您应该使用ParseExact来获取相关的DateTime。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4957316|TimeSpan+ts+=+DateTime.ParseExact("30-01-2004",+"dd-MM-yyyy",+System.Globalization.CultureInfo.InvariantCulture)
++++++++++++++++++-+DateTime.ParseExact("01-02-2002",+"dd-MM-yyyy",+System.Globalization.CultureInfo.InvariantCulture);|code-block|syntax|javascript|4957317|当使用Convert.ToDateTime时，它调用DateTime.Parse，它将尝试与您当前的区域性设置相对应的转换，因为在本例中，它不支持您拥有的DateTime的格式，因此您应该依赖于ParseExact，通过它您可以知道字符串的预期格式，并在获取结果时实现。|4957318|entityMap^0|5|A|L|8|0|0|3|I|Q|E|25|8|2P|A|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|M|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|N|$]]

You should be using <code>ParseExact</code> to get the relevant <code>DateTime</code>.

<pre><code>TimeSpan ts = DateTime.ParseExact("30-01-2004", "dd-MM-yyyy", System.Globalization.CultureInfo.InvariantCulture)
 - DateTime.ParseExact("01-02-2002", "dd-MM-yyyy", System.Globalization.CultureInfo.InvariantCulture);
</code></pre>

While using <code>Convert.ToDateTime</code> it invokes <code>DateTime.Parse</code> which will try the conversion corresponding to the your current culture setting which as in this case doesn't support the format of <code>DateTime</code> you have, so you should rely on the <code>ParseExact</code> whereby you know the format in which the string is expected and achieve in fetching your result.

blocks|key|4957337|text|您的日期格式应该是这样的。开始日期=1/2/2002，结束日期=3/1/2004|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4957338|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|$]]

Your dateformat should be like this. StartDate=1/2/2002 and EndDate=3/1/2004

blocks|key|1707237|text|您必须使用与“en-GB”不同的CultureInfo可能是默认CultureInfo；|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1707238|var+cult+=+new+System.Globalization.CultureInfo("en-GB");
TimeSpan+span+=+Convert.ToDateTime("30-01-2004",+cult).Subtract(Convert.ToDateTime("01-02-2002",+cult));|code-block|syntax|javascript|1707239|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|$]]

You must use CultureInfo maybe the default CultureInfo different from "en-GB";

<pre><code>var cult = new System.Globalization.CultureInfo("en-GB");
TimeSpan span = Convert.ToDateTime("30-01-2004", cult).Subtract(Convert.ToDateTime("01-02-2002", cult));
</code></pre>

blocks|key|919996|text|天数差异的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|919997|blockquote|919998|919999|920000|++public+long+getDaysBetweenDates(Date+d1,+Date+d2){
return+TimeUnit.MILLISECONDS.toDays(d1.getTime()+-+d2.getTime());
}|code-block|syntax|javascript|920001|天与时间之间的|920002|日期差异|920003|920004|920005|Date+startDate+=+//+Set+start+date
Date+endDate+++=+//+Set+end+date

long+duration++=+endDate.getTime()+-+startDate.getTime();

long+diffInSeconds+=+TimeUnit.MILLISECONDS.toSeconds(duration);
long+diffInMinutes+=+TimeUnit.MILLISECONDS.toMinutes(duration);
long+diffInHours+=+TimeUnit.MILLISECONDS.toHours(duration);|920006|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|-4|5|C|7|V|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|E|3|-4|5|6|7|X|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|Y|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|Z|8|@]|9|@]|A|$]]|$1|M|3|N|5|C|7|10|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|12|8|@]|9|@]|A|$]]|$1|Q|3|R|5|H|7|13|8|@]|9|@]|A|$I|J]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

<blockquote>
 for days difference
</blockquote>

<pre><code> public long getDaysBetweenDates(Date d1, Date d2){
return TimeUnit.MILLISECONDS.toDays(d1.getTime() - d2.getTime());
}
</code></pre>

<blockquote>
 Date difference between days with time
</blockquote>

<pre><code>Date startDate = // Set start date
Date endDate = // Set end date

long duration = endDate.getTime() - startDate.getTime();

long diffInSeconds = TimeUnit.MILLISECONDS.toSeconds(duration);
long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(duration);
long diffInHours = TimeUnit.MILLISECONDS.toHours(duration);
</code></pre>

I want to calculate the date difference between form date and two date..Am using timespan to calculate the difference between two date if date difference is positive means it enter another process falls means it return error message.

My partial code is here..

<pre><code> TimeSpan span = Convert.ToDateTime(txtenddate.Text).Subtract(Convert.ToDateTime(txtstartdate.Text));
 int formatted = span.Days;
 if (formatted &lt; 1)
 {
 ScriptManager.RegisterStartupScript(this, this.GetType(), "temp", "&lt;script language='javascript'&gt;alert('Invalid date difference ');&lt;/script&gt;", false);
 } 
</code></pre>

In the above code input is end date : 30-01-2004 start date : 01-02-2002

but it returns error message : String was not recognized as a valid DateTime.

please give me a solution to solve this with out changing date format...

date difference between two dates

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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我想要计算表单日期和两个date..Am之间的日期差异，使用timespan来计算两个日期之间的差异，如果日期差异为正意味着它进入另一个进程，意味着它返回错误消息。我的部分代码在这里..  TimeSpan span = Convert.ToDateTime(txtenddate.Text).Subtract(Conv...

问两个日期之间的日期差异
EN

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问两个日期之间的日期差异EN