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by becker666
Sample working C# code to carry the IPN
by Anshul R
Prefix, Length, and Check Digit CriteriaHere is a table outlining the major credit cards that you might want to validate.CARD TYPE Prefix Length Check digit algorithmMASTERCARD 51-55 16 mod 10VISA 4 13, 16 mod 10AMEX 3437 15 mod 10Diners Club/Carte...
by Tharaka MTR
Article provides details about Mod 10 algorithm and how to validate a credit card number with mod 10 algorithm using C#.
by ortund
Allow purchases via PayPal on your website

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by korol_shahmat
The article explains step-by-step how to start programming using cryptocurrency API for Bitcoin, Litecoin, CrimeaCoin etc. The working example has been written for Crimeacoin.
by Bernardo Castilho
Create a shopping cart class and use it in your MVVM HTML5 applications.
by AJSON
SEO 2013 tutorial.
by ortund
Allow purchases via PayPal on your website

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