Date of Birth should be in DD-MM-YYYY format and date of birth should not be

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Hi,
I need to validate the DateOfBirth using regular Expression.
Which full fill the below condition together
Date of Birth should be in DD-MM-YYYY format (like 12-12-2014 etc) and date of birth should not be future date
Any one please help me

Posted 19-Dec-14 4:48am

Ganesh_verma

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 19-Dec-14 10:58am

What have you tried? Where is the issue?

Ganesh_verma 19-Dec-14 11:18am

I need regular expression

Ganesh_verma 20-Dec-14 9:09am

I am using WSDL validation that accept only regular expression fro validation that's the region I need regex expression.

DamithSL 19-Dec-14 11:05am

what is the application type you working on?

Ganesh_verma 19-Dec-14 11:18am

C#, Web service Application in C#

DamithSL 19-Dec-14 11:20am

update question with your web service method then, are you accept Date as string parameter? don't do that. you can make that field to a DateTime

Ganesh_verma 19-Dec-14 11:23am

I am accepting as string please you only provide the regular expression other step I can do

3 solutions

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OriginalGriff · Answer 1 · 2014-12-19T05:30:00

Solution 1

Don't try to use a Regex: they are Text processors, and to validate a date correctly is a real pain: think about leap years for example.

Instead, use DateTime.TryParseExact - if it works it even gives you the data you need to check the date is in range:

C#

DateTime dtBirth;
if (DateTime.TryParseExact(input, "dd-MM-yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None, out dtBirth))
    {
    if (dtBirth < DateTime.Now.Date)
        {
        ...
        }
    }

Posted 19-Dec-14 5:30am

OriginalGriff

Comments

Ganesh_verma 19-Dec-14 11:38am

I need only regular expression not this

OriginalGriff 19-Dec-14 11:45am

Don't even think about trying to validate dates with a regex: it's not a good idea at all. Think about it: if "31-01-2001" is valid, how do you write a regex that says "31-02-2001" isn't?

DamithSL · Answer 2 · 2014-12-19T05:34:00

Solution 2

C#

string input ="12-12-2014";
DateTime dt;
if (DateTime.TryParseExact( input, "dd-MM-yyyy",CultureInfo.InvariantCulture,DateTimeStyles.None, out dt)
        && dt < DateTime.Now)
{
    //validation success
}

Posted 19-Dec-14 5:34am

DamithSL

Comments

Ganesh_verma 19-Dec-14 11:39am

I need regular expression not this Please provide the expression

DamithSL 19-Dec-14 11:46am

^([1-9]|0[1-9]|1[0-2])[- / .]([1-9]|0[1-9]|1[0-9]|2[0-9]|3[0-1])[- / .](1[9][0-9][0-9]|2[0][0-9][0-9])$

Ganesh_verma 20-Dec-14 8:53am

Thanks for your time but it is not workinng

Maciej Los · Answer 3 · 2014-12-19T07:17:00

Solution 3

Date is date and nothing else, no matter of displayed format!

You don't need any regular expression. You need to convert text into DateTime[^]. Please, see Solution1 or Solution2.

Posted 19-Dec-14 7:17am

Maciej Los