错误：在 C# 中转换为日期格式时，字符串未被识别为有效的日期时间
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Error : String was not recognized as a valid DateTime while converting to date format in c#
提问by iJade
Here is the date time format i'm trying to format.I'm getting this date format from twitter apis
这是我正在尝试格式化的日期时间格式。我从 twitter apis 获取此日期格式
string date = "Thu Jul 18 17:39:53 +0000 2013"
i tried
我试过
Convert.ToDateTime(date).ToString("dd/MM/yyyy")
But it says String was not recognized as a valid DateTime.
但它说 String was not recognized as a valid DateTime.
采纳答案by Tim Schmelter
This works:
这有效：
DateTime.ParseExact(dtStr, "ddd MMM dd HH:mm:ss zzzz yyyy", CultureInfo.InvariantCulture)
ParseExactand TryParseExactallows to use a custom format string. dddis the abbreviated day name, MMMthe abbreviated month name, ddthe day number, HHhours in 24h clock format, mmminutes, ssseconds, zzzzthe time-zoneand yyyythe years.
ParseExact并TryParseExact允许使用自定义格式字符串。ddd是简写的日期名，MMM缩写的月份名称，dd天数，HH在24小时时钟格式，小时mm分，ss秒，zzzz该时区和yyyy多年。
I have used CultureInfo.InvariantCultureto specify that the current culture is not used but InvariantCulturewhich is similar to "en-US".
我曾经CultureInfo.InvariantCulture指定不使用当前文化，但InvariantCulture它类似于"en-US".
works but after getting date from your line of code i tried to do date.ToString("dd/mm/yyyy") but get the string as 12-12-2013, no slashes
有效，但从您的代码行获取日期后，我尝试执行 date.ToString("dd/mm/yyyy") 但将字符串设为 12-12-2013，没有斜线
/is a replacement character for your current culture's date-separator which is obviously -. So also use CultureInfo.InvariantCultureto specify that the separator should be used without using your current culture:
/是您当前文化的日期分隔符的替换字符，显然是-. 所以也用于CultureInfo.InvariantCulture指定分隔符应该在不使用当前文化的情况下使用：
string result = dateTime.ToString("dd/mm/yyyy", CultureInfo.InvariantCulture);
See: The "/" Custom Format Specifier
请参阅：“/”自定义格式说明符
回答by Karl Anderson
Your date string needs to be this:
您的日期字符串需要是这样的：
Thu Jul 18 2013 17:39:53 +0000
Whatever is producing your string needs to have the year value after the month and day and before the time, like above.
无论产生什么字符串，都需要在月份和日期之后以及时间之前具有年份值，如上所示。
string date = "Thu Jul 18 2013 17:39:53 +0000";
var theDate = Convert.ToDateTime(date);
Note: This will produce a valid .NET DateTimeobject.
注意：这将生成一个有效的 .NETDateTime对象。
UPDATE:
更新：
If you cannot change the string produced, then use the ParseExactmethod with a custom format, like this:
如果您无法更改生成的字符串，请使用ParseExact自定义格式的方法，如下所示：
string date = "Thu Jul 18 17:39:53 +0000 2013";
var theDate = DateTime.ParseExact(date, "ddd MMM dd H:mm:ss zzz yyyy", CultureInfo.InvariantCulture);
回答by Nir Kornfeld
You are trying to convert a non-standard format, so use this:
您正在尝试转换非标准格式，因此请使用以下命令：
string dateStr = "Thu Jul 18 17:39:53 +0000 2013";
DateTime date = DateTime.ParseExact(dateStr, "ddd MMM dd h:mm:ss KKKK yyyy", System.Globalization.CultureInfo.InvariantCulture);
Or build the correct format for your input.
或者为您的输入构建正确的格式。
回答by Soner G?nül
How about like;
喜欢怎么样？
string date = "Thu Jul 18 17:39:53 +0000 2013";
DateTime dt = DateTime.ParseExact(date, "ddd MMM dd HH:mm:ss KKKK yyyy", CultureInfo.InvariantCulture);
Console.WriteLine(dt);
Output will be;
输出将是；
18.07.2013 20:39:53
Kfor time zone information in here.
K时区信息在这里。
Check out for more information;
查看更多信息；
回答by Rohit
Try this
尝试这个
DateTime.ParseExact(YourDate, "ddd MMM dd HH:mm:ss KKKK yyyy", CultureInfo.InvariantCulture)
Its better to use Invariant culture than Current culture
使用不变文化比使用当前文化更好
回答by Ajay
Try using DateTime.ParseExact.
尝试使用 DateTime.ParseExact。
string date = "Thu Jul 18 17:39:53 +0000 2013"
DateTime date = DateTime.ParseExact(date, "dd/MM/yyyy", null);
回答by Kashyap Vyas
this.Text="22/11/2009";
this.Text="22/11/2009";
DateTime date = DateTime.ParseExact(this.Text, "dd/MM/yyyy", null);
DateTime date = DateTime.ParseExact(this.Text, "dd/MM/yyyy", null);
