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Credit card date validation

Posted on 2009-04-11
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Last Modified: 2012-05-06
Hello everyone,

I have been looking for days for a good solution to this and have had no luck.  What I want to do is simply use an ASP.net validator (probably regular expression validator) to validate a credit card expiration date in the format of (MM/YYYY) on the client side. Does anyone have any ideas of how to implement this.  If there is no way to use an ASP.net validator for this, does anyone know of a good javascript to use?  
Thanks

Jay  
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Question by:jwoodhams
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LVL 18

Accepted Solution

by:
Ajay Sharma earned 2000 total points
ID: 24124722
Use Regex:

^((0[1-9])|(1[0-2]))\/(\d{4})$

The above regex code calculates only the month and year. It can not evaluate that if the date is less then today or not.

Also read http://www.codeproject.com/KB/validation/creditcardvalidator.aspx

For more complex conditions use custom validator.

Resources for custom validator:

http://asp.net-tutorials.com/validation/custom-validator/

http://www.4guysfromrolla.com/articles/073102-1.aspx

http://www.w3schools.com/ASPNET/showasp.asp?filename=demo_customvalidator

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Author Closing Comment

by:jwoodhams
ID: 31569196
Thanks, this is actually what I started out with but, I had my syntax wrong.  Thanks for your help.
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