[已解决]更改系统的DateTime格式后将字符串转换为DateTime的问题 [英] [Solved] Problem converting string to DateTime after changing System's DateTime format

问题描述

大家好，

将字符串转换为DateTime时遇到问题.
我是这样的:

Hello All,

I am facing a problem while converting a string to DateTime.
I am doing it like this:

DateTime dt = Convert.ToDateTime(strDate)

我得到了正确的结果.

但是，一旦我将系统的短日期格式从"MM/dd/yy"更改为"dd-MMM-yy"，我就会收到错误消息，因为字符串不是有效的DateTime格式.

我调试并检查了strDate的值，它是有效的DateTime格式.
谁能告诉我如何处理系统的DateTime格式的更改.

附加代码:
我将我的DateTimePicker值保存为字符串到数据库，然后在窗体加载时将相同的值分配给我的DateTimePicker .....但是，如果在两者之间更改系统的日期时间格式，我会报错

I was getting correct result.

But as soon as I changed my system''s short date format from ''MM/dd/yy'' to ''dd-MMM-yy'', I am getting an error as "string is not a valid DateTime format.

I debugged and checked value of strDate and it is a valid DateTime format.
Can anyone tell me how can I handle this change in system''s DateTime format.

Additional Code:
I am saving my DateTimePicker value as a string to database and then on form load i am assigning same value to my DateTimePicker..... but if in between i change my system''s datetime format i am getting error

//ScheduleEveryStart is a string which is getting saved in to database
clsGlobal.Configuration.ScheduleEveryStart = Convert.ToString(dtpStart.Value);

//load form code
dtpStart.Value = (clsGlobal.Configuration.ScheduleEveryStart == "") ? System.DateTime.Now : Convert.ToDateTime(clsGlobal.Configuration.ScheduleEveryStart);

谢谢，
Nagendra.

Thanks,
Nagendra.

推荐答案

尝试此链接

try this link

ClickHere[^]

您是否尝试过DateTime.Parse方法.从理论上讲，该方法应注意识别正确的格式- http://msdn.microsoft.com/en -us/library/1k1skd40.aspx [ ^ ]
问候

Hi,
have you tried DateTime.Parse method. Theoretically, the method should take care in recognizing the right format - http://msdn.microsoft.com/en-us/library/1k1skd40.aspx[^]
Regards

如果您不需要时间，可以像这样调用代码.

If you dont need the time you can call your code like this.

string[] strs = s.Split('' '');

if (strs.Length > 1) {
   DateTime dt = Convert.ToDateTime(strs[0]);
}

这个想法是消除导致转换错误的时间.

或尝试这种方法

The idea is strip out the time that causing the conversion error.

OR try this approach

string dateString = "01/31/2011";
string pattern = "d/M/yyy h:mm:ss tt"; //more info below
DateTime parsedDate = DateTime.Now;

if (DateTime.TryParseExact(dateString, pattern, null, DateTimeStyles.None, out parsedDate)){
   //parsedDate
   //ready to be used
   //....
}

使用模式 [

Pattern to use[^]


Hope this works.

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