blocks|key|4259062|text|尝试使用dd.MM.yyyy格式字符串的DateTime.ParseExact|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|4259063|+DateTime.ParseExact(txtDatumDokum.Text,+"yyyyMMdd",+CultureInfo.InvariantCulture,+DateTimeStyles.None);|code-block|syntax|javascript|4259064|entityMap^0|4|A|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Try DateTime.ParseExact with the dd.MM.yyyy format string 

<pre><code> DateTime.ParseExact(txtDatumDokum.Text, "yyyyMMdd", CultureInfo.InvariantCulture, DateTimeStyles.None);
</code></pre>

blocks|key|2359097|text|这看起来不太好，不管怎么说，试试这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2359098|string+s+=+"09.09.2011";
DateTime+dt+=+Convert.ToDateTime(
++++s.Replace(".",
++++new+System.Globalization.DateTimeFormatInfo().DateSeparator));|code-block|syntax|javascript|2359099|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|$]]

It's not good to see, anyway try this:

<pre><code>string s = "09.09.2011";
DateTime dt = Convert.ToDateTime(
 s.Replace(".",
 new System.Globalization.DateTimeFormatInfo().DateSeparator));
</code></pre>

blocks|key|4259205|text|您需要告诉我们为什么文本输入使用这种格式。如果是因为用户以这种方式输入，那么您需要确保格式与Thread.CurrentCulture.DateTimeFormat.ShortDatePattern提供的格式相匹配。将区域性(通过设置Thread.CurrentCulture)更改为适当的值将解决您的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4259206|如果不管输入的格式是什么，都应该对其进行解析，那么首先需要进行一些手动处理(也许可以使用string.Replace从输入中删除空格和其他分隔符)，然后尝试使用DateTime.ParseExact和已知的格式字符串来解析日期。|4259207|但这完全取决于为什么输入具有这种格式，以及为什么应用程序的当前区域性与它不匹配。|4259208|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.shortdatepattern.aspx|1|http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx^0|1A|1H|39|L|1A|1H|0|0|18|E|28|J|28|J|1|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]|$9|W|A|X|B|C]]|D|@$9|Y|A|Z|1|10]]|E|$]]|$1|F|3|G|5|6|7|11|8|@$9|12|A|13|B|C]|$9|14|A|15|B|C]]|D|@$9|16|A|17|1|18]]|E|$]]|$1|H|3|I|5|6|7|19|8|@]|D|@]|E|$]]|$1|J|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]]]

You need to tell us why the text input is using this format. If it is because the user enters it this way, then you need to make sure that the format matches that given by <a href="http://msdn.microsoft.com/en-us/library/system.globalization.datetimeformatinfo.shortdatepattern.aspx" rel="nofollow"><code>Thread.CurrentCulture.DateTimeFormat.ShortDatePattern</code></a>. Changing the culture (by setting 
 <code>Thread.CurrentCulture</code>) to an appropriate value will then solve your problem.

If you are supposed to parse the input no matter what format it is in, then you will need to do some manual processing first (perhaps remove spaces and other delimiter characters from the input with <code>string.Replace</code>) and then try to parse the date using <a href="http://msdn.microsoft.com/en-us/library/w2sa9yss.aspx" rel="nofollow"><code>DateTime.ParseExact</code></a> and a known format string.

But it all depends on why the input has that format, and why your application's current culture does not match it.

blocks|key|3974128|text|您可以尝试这样做，TryParse可以避免解析异常。然后，您只需要检查结果，以确保它已被解析。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3974129|DateTime+datuMDokumenta;
bool+result+=+DateTime.TryParse(txtDatumDokum.Text,+out+datuMDokumenta);|code-block|syntax|javascript|3974130|您必须确定这对于您的应用程序来说是否是一个好的解决方案。|3974131|请参阅此示例：http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx|offset|length|3974132|根据您给出的日期判断您需要包含区域性，de-DE接受01.01.11类型的日期，但我不确定您实际想要使用哪种日期，您需要决定。代码将如下所示：|3974133|using+System.Globalization;

DateTime+datuMDokumenta;
bool+result+=+DateTime.TryParse(txtDatumDokum.Text,+CultureInfo.CreateSpecificCulture("de-DE"),+DateTimeStyles.None,+out+datuMDokumenta);|3974134|可以在此处找到区域性列表，请选择适合您的区域性列表：http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo%2528v=vs.71%2529.aspx|3974135|这里的优点是，这段代码的工作量比较大，但很难破解。假设您在TextBox上使用自由文本输入，您不希望抛出异常。|3974136|entityMap|0|LINK|mutability|MUTABLE|url|http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx|1|http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo%2528v=vs.71%2529.aspx^0|0|0|0|7|1H|0|0|0|0|Q|2I|1|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|15|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|16|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|17|8|@]|9|@$K|18|L|19|1|1A]]|A|$]]|$1|M|3|N|5|6|7|1B|8|@]|9|@]|A|$]]|$1|O|3|P|5|D|7|1C|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|1D|8|@]|9|@$K|1E|L|1F|1|1G]]|A|$]]|$1|S|3|T|5|6|7|1H|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]|12|$5|X|Y|Z|A|$10|13]]]]

You could try this, TryParse avoids parsing exceptions.. Then you just need check result to be sure that it parsed.

<pre><code>DateTime datuMDokumenta;
bool result = DateTime.TryParse(txtDatumDokum.Text, out datuMDokumenta);
</code></pre>

You will have to determine if this is a good solution for your application.

See this example:
<a href="http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/ch92fbc1.aspx</a>

Judging by the date you gave you need to include a culture, de-DE accepts 01.01.11 type of dates but I'm not sure which one you actually want to use, you'll need to decide that.. the Code would look like this:

<pre><code>using System.Globalization;

DateTime datuMDokumenta;
bool result = DateTime.TryParse(txtDatumDokum.Text, CultureInfo.CreateSpecificCulture("de-DE"), DateTimeStyles.None, out datuMDokumenta);
</code></pre>

A list of cultures can be found here, select the appropriate one for you:
<a href="http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo%28v=vs.71%29.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/system.globalization.cultureinfo%28v=vs.71%29.aspx</a>

The plus here is that this code is a bit more work but it is very difficult to break. Assuming you are using a free text entry on a TextBox you don't want to be throwing exceptions.

blocks|key|412832|text|是的，您必须在当前区域性中解析输入日期。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|412833|string[]+format+=+new+string[]+{+"dd.MM.yyyy"+};
string+value+=+"09.09.2011";
DateTime+datetime;

if+(DateTime.TryParseExact(value,+format,+System.Globalization.CultureInfo.InvariantCulture,+System.Globalization.DateTimeStyles.NoCurrentDateDefault,+out+datetime))
++++++//Valid
else
+++++//Invalid|code-block|syntax|javascript|412834|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|$]]

Yes you have to parse input date in current culture.

<pre><code>string[] format = new string[] { "dd.MM.yyyy" };
string value = "09.09.2011";
DateTime datetime;

if (DateTime.TryParseExact(value, format, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.NoCurrentDateDefault, out datetime))
 //Valid
else
 //Invalid
</code></pre>

blocks|key|411329|text|DateTime+dt+=+Convert.ToDateTime(txtDatumDokum.Text)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|411330|这是right...there不是问题|411331|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

DateTime dt = Convert.ToDateTime(txtDatumDokum.Text)

It is right...there is no isssue

blocks|key|4259372|text|在compact+Framework3.5下的反序列化调用期间，我以前遇到过一些意外的行为。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4259373|我已经从使用OpenNETCF序列化类转换为使用框架XML序列化类。在这样做的过程中，默认的时间格式和属性/公共成员的顺序发生了变化。长话短说，我公开了一个文本属性，它将日期时间转换回VB6应用程序所需的格式。|4259374|++++++++++++Dim+dumbDate+As+New+Date
++++++++++++Dim+formats()+As+String+=+{"yyyy-MM-ddTHH:mm:ss.fffzzz",+_
+++++++++++++++++++++++++++++++++++++++"yyyy-MM-dd+HH:mm:ss:fffffffzzz"}

++++++++++++_datetimeTaken+=+dumbDate.ParseExact(value,+formats,+CultureInfo.InvariantCulture,+DateTimeStyles.None)

++++++++++++'+There+is+something+wrong+with+compact+framework+during+the+Serialization+calls.+
++++++++++++'+calling+the+shared+method+Date.Parse+or+Date.ParseExact+does+not+produce+the+same
++++++++++++'+result+as+calling+a+share+method+on+an+instance+of+Date.+WTF?!?!?!
++++++++++++'+The+below+will+cause+a+"Format"+exception.
++++++++++++'_datetimeTaken+=+Date.ParseExact(value,+formats,+CultureInfo.InvariantCulture,+DateTimeStyles.None)|code-block|syntax|javascript|4259375|Date.blah不工作。dumbDate.blah起作用了。真奇怪。|4259376|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

During a Deserialization call under compact framework 3.5 i've had some unexpected behaviour before.

I've converted from using the OpenNETCF serialization classes to the framework XML serialization class. In doing so, the default time format has changed and the order of property/public members. So long story short, i've exposed a text property which converts my date-times back to the format my VB6 application is expecting.

<pre><code> Dim dumbDate As New Date
 Dim formats() As String = {"yyyy-MM-ddTHH:mm:ss.fffzzz", _
 "yyyy-MM-dd HH:mm:ss:fffffffzzz"}

 _datetimeTaken = dumbDate.ParseExact(value, formats, CultureInfo.InvariantCulture, DateTimeStyles.None)

 ' There is something wrong with compact framework during the Serialization calls. 
 ' calling the shared method Date.Parse or Date.ParseExact does not produce the same
 ' result as calling a share method on an instance of Date. WTF?!?!?!
 ' The below will cause a "Format" exception.
 '_datetimeTaken = Date.ParseExact(value, formats, CultureInfo.InvariantCulture, DateTimeStyles.None)
</code></pre>

Date.blah doesn't work. dumbDate.blah works. strange.

blocks|key|2359392|text|++++public+static+void+Main(string[]+args)
++++{
++++++++var+dt+=+new+DateTime(2018,+04,+1);
++++++++Console.WriteLine(dt);
+++++++
++++++++string+month+=+dt.ToString("MMMM");
++++++++Console.WriteLine(month);+++++++++++++++//April

++++++++month+=+dt.ToString("MMM");
++++++++Console.WriteLine(month);++++++++++++++//Apr

++++++++month+=+dt.ToString("MM");
++++++++Console.WriteLine(month);+++++++++++++//04

++++++++Console.ReadKey();
++++}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2359393|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> public static void Main(string[] args)
 {
 var dt = new DateTime(2018, 04, 1);
 Console.WriteLine(dt);
 
 string month = dt.ToString(&quot;MMMM&quot;);
 Console.WriteLine(month); //April

 month = dt.ToString(&quot;MMM&quot;);
 Console.WriteLine(month); //Apr

 month = dt.ToString(&quot;MM&quot;);
 Console.WriteLine(month); //04

 Console.ReadKey();
 }
</code></pre>

blocks|key|3974045|text|你的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3974046|DateTime+datuMDokumenta+=+Convert.ToDateTime(txtDatumDokum.Text);|code-block|syntax|javascript|3974047|尝试将其更改为：|3974048|DateTime+datuMDokumenta+=+Convert.ToDateTime(txtDatumDokum);|3974049|当你打印date/time的时候|offset|length|style|CODE|3974050|打印datuMDokumenta.Text|3974051|entityMap^0|0|0|0|0|4|9|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]]|$1|G|3|H|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|Y|8|@$M|Z|N|10|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

your code:

<pre><code>DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum.Text);
</code></pre>

try changing this to:

<pre><code>DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum);
</code></pre>

and when u print the <code>date/time</code>

print datuMDokumenta.Text

<pre><code>DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum.Text);
</code></pre>

txtDatumDokum.Text is like "09.09.2011".

but i get FormatException error. Must i parse date?

DateTime FormatException error

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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DateTime datuMDokumenta = Convert.ToDateTime(txtDatumDokum.Text);txtDatumDokum.Text类似于"09.09.2011“。但是我得到了FormatException错误。我必须解析日期吗？

问DateTime FormatException错误
EN

回答 9

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问DateTime FormatException错误EN

回答 9

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问DateTime FormatException错误
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