Radio button checked by default when using ng-repeat

http://stackoverflow.com/questions/29539549/radio-button-checked-by-default-when-using-ng-repeat
http://stackoverflow.com/questions/25443018/angularjs-is-it-possible-to-deselect-html-radio-input-by-click
http://stackoverflow.com/questions/22498198/each-alternative-in-angular-js

Date Time format c#

http://www.mikesdotnetting.com/article/23/date-formatting-in-c
https://msdn.microsoft.com/en-us/library/az4se3k1%28v=vs.110%29.aspx

C#- Check credit card or debit card is MasterCardor Visa

http://stackoverflow.com/questions/72768/how-do-you-detect-credit-card-type-based-on-number