用于验证字符串中日期的正则表达式

问题描述

大家好，


如何验证字符串中的日期.我需要服务器端验证.我想使用正则表达式来验证字符串或语句中的日期...请为该问题建议服务器端代码.

例如:"DOB:02-02-1987"或"DOB:1987年5月14日"



谢谢

Hi All,


How to validate the date within a string..?? I want the server-side validation.I want the regular expression to validate date within a string or statement...please suggest server side code for this question.

For ex:"DOB:02-02-1987" or "DOB:14th may 1987"



Thanks

推荐答案

function IsValidDate(dateString) {
    return !isNaN(Date.parse(dateString));
}

在服务器端，您需要使用System.DateTime方法Parse或ParseExact做同样的事情.与JavaScript不同，您需要以与所需区域性信息(IFormatProvider)和/或格式说明符相对应的准确格式提供输入字符串.但是对于Parse方法，有一些变体:仅日期，仅时间，两者，并且区域性应与当前线程区域性相对应.

此外，您需要在try-catch块中调用此类方法，因为它可以捕获异常.例如:

On server side, you need to do the same thing using System.DateTime methods Parse or ParseExact. Unlike JavaScript, you will need to supply input string in exact format corresponding to required culture information (IFormatProvider) and/or format specifiers; but for Parse method, there are variants: date only, time only, both, and the culture should correspond current thread culture.

Besides, you need to call such method in the try-catch block as it can catch exception. For example:

static bool IsValidDate(string value) {
   try {
        System.DateTime.Parse(value);
        return true;
   } catch(System.FormatException) {
        return false;
   } //exception
} //IsValidDate

请参阅:
http://msdn.microsoft.com/en-us/library/system.datetime.aspx [ ^ ].

有关时间字符串格式，请参见:
http://msdn.microsoft.com/en-us/library/az4se3k1.aspx [ ^ ]，
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx [ ^ ].

—SA

Please see:
http://msdn.microsoft.com/en-us/library/system.datetime.aspx[^].

For time string formats, please see:
http://msdn.microsoft.com/en-us/library/az4se3k1.aspx[^],
http://msdn.microsoft.com/en-us/library/8kb3ddd4.aspx[^].

—SA

<asp:textbox id=""txtDateStart"" cssclass=""input"" runat=""server"" width=""200″" xmlns:asp="#unknown">

<asp:comparevalidator id=""cmprValidatorDateStart"" controltovalidate=""txtDateStart"" xmlns:asp="#unknown">
    Type="Date" Display="Dynamic" Operator="DataTypeCheck" 
    ErrorMessage="*Not a valid date." runat="server"<>/asp:CompareValidator>

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