how to convert middle 4 credit card no to xxxx in c#?

string carditCardNumber = "4477468697203003";
            int halfPoint = carditCardNumber.Length / 2;
            string carditCard = carditCardNumber.Substring((halfPoint - 2), 4);
            string updateCarditCardNumber = carditCardNumber.Replace(carditCard, "xxxx");
            Response.Write(updateCarditCardNumber);

Karthik_Mahalingam · Answer 2 · 2014-01-12T19:32:00

Solution 3

Try this..

C#

string creditcardno = "1234567891011125";
        List<char> temp = creditcardno.ToList();

        int which4ToBeMadeasXXX = 4;
        int end = (which4ToBeMadeasXXX) * 4;
        int start = end - 4;

        for (int i = start; i < end; i++)
            temp[i] = 'X';


        creditcardno = string.Join("", temp);

Posted 12-Jan-14 19:32pm

Karthik_Mahalingam

Comments

Member 10276220 13-Jan-14 1:37am

thnx karthik...if i want this in source page...then what will be the code?
please help...i wanna show this no in gridview

Karthik_Mahalingam 13-Jan-14 1:49am

post your full code, i will help you...

Member 10276220 13-Jan-14 1:56am

i have a grid view...i wanna show credit card no in this gridview like "123456789XXXX123"
how to do this in source page??

Karthik_Mahalingam 13-Jan-14 2:01am

ok fine..
pls post your code, what you have tried
then i can modify the same..

Karthik_Mahalingam 13-Jan-14 2:04am

wait for sometime.. going to break, wil be back in 20 mins

Member 10276220 13-Jan-14 2:33am

thanx karthik 4 your help...but i did it...

Karthik_Mahalingam 13-Jan-14 3:44am

ok fine..
if your issue is resolved, pls close this post..

how to convert middle 4 credit card no to xxxx in c#?

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how to convert middle 4 credit card no to xxxx in c#?

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