使用c＃将字符串转换为datetime的问题 [英] problem converting string to datetime using c#

问题描述

我将字符串转换为日期时间有问题。

Hi,
I have a problem converting string to datetime.

string datestr="14/2/2015";
DateTime x1;
                        string pattern = "dd-MM-yyyy";
                        DateTime.TryParseExact(EndDate, pattern, null, DateTimeStyles.None, out x1);
                        DateTime.TryParse(EndDate, out x1);
                        DateTime.TryParseExact(EndDate, "dd/MM/yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None, out x1);
output like this 1/1/0001 12:00:00 AM

if I am using x1 = Convert.ToDateTime(datestr); 
I got exception.

请帮帮我

谢谢

please help me
Thanks

推荐答案

帮助你做什么？你想要这个：

help you with what exactely ? do you want this :

x1 = Convert.ToDateTime(datestr); 

能正常工作吗？然后你必须阅读这个 https://msdn.microsoft.com/en -us / library / 9xk1h71t（v = vs.100）.aspx [ ^ ]并注意如果provider为null，则使用当前文化的DateTimeFormatInfo。



鉴于您提供的内容，看起来14/2/2015对于您当前的文化设置不正确 - 我先试试这个

to work properly ? then you have to read this https://msdn.microsoft.com/en-us/library/9xk1h71t(v=vs.100).aspx[^] and pay attention to " If provider is null, the DateTimeFormatInfo for the current culture is used."

Given what you've supplied, it would appear as if "14/2/2015" isn't correct for your current culture setting - I'd try this first

string datestr="14/2/2015";
CultureInfo culture = new CultureInfo("en-GB");
DateTime x1 = Convert.ToDateTime(datestr,culture );

如果有效，你知道你的文化背景很可能en-US或其他内容（在这种情况下'en-US'字符串应格式化为2015年2月14日）

and if that works you know your culture setting is likely 'en-US' or something else (in which case of 'en-US' the string should be formatted "2/14/2015")

因为您的默认文化格式是US

Because your default culture format is en-US

string datestr="14/2/2015";

它的意思是：MM / dd / YYYY

程序检测：

It's mean: MM/dd/YYYY
Program detect:

Month = 14
Day = 2
Year = 2015

=>所以你应该改为：

1 /

=> so you should change as:
1/

string datestr="02/14/2015";
DateTime dt = Convert.ToDateTime(datestr);

希望这个帮助！

Hope this help!

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