display x symbols in place of creditcard number?

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hi sir,
in my project first time user enter credit card number that number is stored in database. and that credit card number is displayed in textbox.
my aim is not to display total creditcard number. display only last 4 numbers remaing display like xxxx.

display like Ex: xxxxxxxxxx1234

please give me a solution

Thanks

Posted 10-Aug-10 0:22am

ajay.raju531

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Christian Graus · Answer 1 · 2010-08-10T00:30:00

Solution 1

If you don't know how to do this, you should NOT be trusted with people's credit card numbers. You just show the Xs and the last four characters, which you can get with a substring in your stored proc ideally.

Posted 10-Aug-10 0:30am

Christian Graus

Inderjeet Kaur · Answer 2 · 2010-08-10T00:30:00

Solution 2

Hi Ajay

:) an do it like this. i used it to display card numbers in grid.

int cardlen = CardNumber.Length;
string last4number = CardNumber.Substring(cardlen - 4);

CardNumber = "XXXX XXXX XXXX " + last4number;
return CardNumber;

Posted 10-Aug-10 0:30am

Inderjeet Kaur