Question

How to check the date format of a input field

Asked by: Hojoformo

How can I check if a date field is in the correct date format?  I need to check a inputted date to make sure it is in this date format:  Date - YYYY-MM-DD format

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Asked On
2009-10-29 at 15:47:42ID24856569
Topic

.NET

Participating Experts
2
Points
500
Comments
2

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Answers

 

by: Idle_MindPosted on 2009-10-29 at 16:17:34ID: 25699113

Are you getting a STRING as input?...or are you getting something else from a different source?

What version and language are you using?

Will it only be NUMBERS?...if you are using anything else then the CULTURE (current language) will come into play!

 

by: evilrixPosted on 2009-10-30 at 02:46:41ID: 25701384

If you want just that specific format use a simple regex

"Regular Expression Matching a Valid Date"
http://www.regular-expressions.info/dates.html

".NET Framework Regular Expressions"
http://msdn.microsoft.com/en-us/library/hs600312.aspx

There are plenty of other example regexes for data/time formats here: http://regexlib.com/DisplayPatterns.aspx?cattabindex=4&categoryId=5

(19|20)\d\d([- /.])(0[1-9]|1[012])\2(0[1-9]|[12][0-9]|3[01])
                                              
1:

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