Get Credit Card Type

How to get C-card type, how to know the input card number is Visa or Master Card ?
here the code for CreditCard.cs

public class CreditCard
{
    private string AmericanExpressPattern => @"^3[47][0-9]{13}$";
    private string MasterCardPattern => @"^5[1-5][0-9]{14}$";
    private string VisaCardPattern => @"^4[0-9]{12}(?:[0-9]{3})?$";
    private string DinersClubCardPattern => @"^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
    private string EnRouteCardPattern => @"^(2014|2149)";
    private string DiscoverCardPattern => @"^6(?:011|5[0-9]{2})[0-9]{12}$";
    private string JcbCardPattern => @"^(?:2131|1800|35\d{3})\d{11}$";


    private Dictionary CreditRegxs { get; set; }

    public CreditCard()
    {
        CreditRegxs = new Dictionary()
        {
            {"American Express",AmericanExpressPattern},
            {"Mastercard",MasterCardPattern},
            {"Visa",VisaCardPattern},
            {"Diners Club",DinersClubCardPattern},
            {"En Route",EnRouteCardPattern},
            {"Discover",DiscoverCardPattern},
            {"JCB ",JcbCardPattern},
        };
    }

    public string GetCreditCardType(string cardNumber)
    {
        string cardType = "Unknown";
        try
        {
            string cardNum = cardNumber.Replace(" ", "").Replace("-", "");
            foreach (string cardTypeName in CreditRegxs.Keys)
            {
                Regex regex = new Regex(CreditRegxs[cardTypeName]);
                if (regex.IsMatch(cardNum))
                {
                    cardType = cardTypeName;
                    break;
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex);
        }
        return cardType;
    }

}
public class CreditCard
{
    private string AmericanExpressPattern => @"^3[47][0-9]{13}$";
    private string MasterCardPattern => @"^5[1-5][0-9]{14}$";
    private string VisaCardPattern => @"^4[0-9]{12}(?:[0-9]{3})?$";
    private string DinersClubCardPattern => @"^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
    private string EnRouteCardPattern => @"^(2014|2149)";
    private string DiscoverCardPattern => @"^6(?:011|5[0-9]{2})[0-9]{12}$";
    private string JcbCardPattern => @"^(?:2131|1800|35\d{3})\d{11}$";


    private Dictionary<string string=""> CreditRegxs { get; set; }

    public CreditCard()
    {
        CreditRegxs = new Dictionary<string string="">()
        {
            {"American Express",AmericanExpressPattern},
            {"Mastercard",MasterCardPattern},
            {"Visa",VisaCardPattern},
            {"Diners Club",DinersClubCardPattern},
            {"En Route",EnRouteCardPattern},
            {"Discover",DiscoverCardPattern},
            {"JCB ",JcbCardPattern},
        };
    }

    public string GetCreditCardType(string cardNumber)
    {
        string cardType = "Unknown";
        try
        {
            string cardNum = cardNumber.Replace(" ", "").Replace("-", "");
            foreach (string cardTypeName in CreditRegxs.Keys)
            {
                Regex regex = new Regex(CreditRegxs[cardTypeName]);
                if (regex.IsMatch(cardNum))
                {
                    cardType = cardTypeName;
                    break;
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex);
        }
        return cardType;
    }

}
</string></string>

1. <code>
2. public class CreditCard
3. {
4. private string AmericanExpressPattern => @"^3[47][0-9]{13}$";
5. private string MasterCardPattern => @"^5[1-5][0-9]{14}$";
6. private string VisaCardPattern => @"^4[0-9]{12}(?:[0-9]{3})?$";
7. private string DinersClubCardPattern => @"^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
8. private string EnRouteCardPattern => @"^(2014|2149)";
9. private string DiscoverCardPattern => @"^6(?:011|5[0-9]{2})[0-9]{12}$";
10. private string JcbCardPattern => @"^(?:2131|1800|35\d{3})\d{11}$";
13. private Dictionary<string string=""> CreditRegxs { get; set; }
15. public CreditCard()
16. {
17. CreditRegxs = new Dictionary<string string="">()
18. {
19. {"American Express",AmericanExpressPattern},
20. {"Mastercard",MasterCardPattern},
21. {"Visa",VisaCardPattern},
22. {"Diners Club",DinersClubCardPattern},
23. {"En Route",EnRouteCardPattern},
24. {"Discover",DiscoverCardPattern},
25. {"JCB ",JcbCardPattern},
26. };
27. }
29. public string GetCreditCardType(string cardNumber)
30. {
31. string cardType = "Unknown";
32. try
33. {
34. string cardNum = cardNumber.Replace(" ", "").Replace("-", "");
35. foreach (string cardTypeName in CreditRegxs.Keys)
36. {
37. Regex regex = new Regex(CreditRegxs[cardTypeName]);
38. if (regex.IsMatch(cardNum))
39. {
40. cardType = cardTypeName;
41. break;
42. }
43. }
44. }
45. catch (Exception ex)
46. {
47. Console.WriteLine(ex);
48. }
49. return cardType;
50. }
52. }
53. </string></string></code>

<code>
public class CreditCard
{
    private string AmericanExpressPattern => @"^3[47][0-9]{13}$";
    private string MasterCardPattern => @"^5[1-5][0-9]{14}$";
    private string VisaCardPattern => @"^4[0-9]{12}(?:[0-9]{3})?$";
    private string DinersClubCardPattern => @"^3(?:0[0-5]|[68][0-9])[0-9]{11}$";
    private string EnRouteCardPattern => @"^(2014|2149)";
    private string DiscoverCardPattern => @"^6(?:011|5[0-9]{2})[0-9]{12}$";
    private string JcbCardPattern => @"^(?:2131|1800|35\d{3})\d{11}$";


    private Dictionary<string string=""> CreditRegxs { get; set; }

    public CreditCard()
    {
        CreditRegxs = new Dictionary<string string="">()
        {
            {"American Express",AmericanExpressPattern},
            {"Mastercard",MasterCardPattern},
            {"Visa",VisaCardPattern},
            {"Diners Club",DinersClubCardPattern},
            {"En Route",EnRouteCardPattern},
            {"Discover",DiscoverCardPattern},
            {"JCB ",JcbCardPattern},
        };
    }

    public string GetCreditCardType(string cardNumber)
    {
        string cardType = "Unknown";
        try
        {
            string cardNum = cardNumber.Replace(" ", "").Replace("-", "");
            foreach (string cardTypeName in CreditRegxs.Keys)
            {
                Regex regex = new Regex(CreditRegxs[cardTypeName]);
                if (regex.IsMatch(cardNum))
                {
                    cardType = cardTypeName;
                    break;
                }
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex);
        }
        return cardType;
    }

}
</string></string></code>

Add Helper Class to use it

public static class CreditCardHelper
{
    public static string GetCreditCardType(this string cardNumber)
    {
        return  new CreditCard().GetCreditCardType(cardNumber);
    }
}
public static class CreditCardHelper
{
    public static string GetCreditCardType(this string cardNumber)
    {
        return  new CreditCard().GetCreditCardType(cardNumber);
    }
}

1. <code>
3. public static class CreditCardHelper
4. {
5. public static string GetCreditCardType(this string cardNumber)
6. {
7. return new CreditCard().GetCreditCardType(cardNumber);
8. }
9. }
10. </code>

<code>

public static class CreditCardHelper
{
    public static string GetCreditCardType(this string cardNumber)
    {
        return  new CreditCard().GetCreditCardType(cardNumber);
    }
}
</code>

Example to use The class :

static void Main(string[] args)
{
     var card = "4111 1111 1111 1111";
     Console.WriteLine(card.GetCreditCardType());
}
static void Main(string[] args)
{
     var card = "4111 1111 1111 1111";
     Console.WriteLine(card.GetCreditCardType());
}

1. <code>
2. static void Main(string[] args)
3. {
4. var card = "4111 1111 1111 1111";
5. Console.WriteLine(card.GetCreditCardType());
6. }
7. </code>

<code>
static void Main(string[] args)
{
     var card = "4111 1111 1111 1111";
     Console.WriteLine(card.GetCreditCardType());
}
</code>

1. <code>
2. </code>

<code>
</code>

1. <code>
2. </code>

<code>
</code>

To download full code from GitHub HereTo download full code from <a href="https://github.com/msm2020/Blog-2019/tree/master/Blog2019/CreditCardTypeConsoleApp">GitHub Here</a>

1. <code>To download full code from <a href="https://github.com/msm2020/Blog-2019/tree/master/Blog2019/CreditCardTypeConsoleApp">GitHub Here</a></code>

<code>To download full code from <a href="https://github.com/msm2020/Blog-2019/tree/master/Blog2019/CreditCardTypeConsoleApp">GitHub Here</a></code>