Philiprehberger.CreditCardValidator
v0.1.3399 downloadsMIT
Validate credit card numbers with Luhn check, detect card brand, and mask for display.
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dotnet add package Philiprehberger.CreditCardValidatorREADME
Philiprehberger.CreditCardValidator
Validate credit card numbers with Luhn check, detect card brand, and mask for display.
Installation
dotnet add package Philiprehberger.CreditCardValidator
Usage
using Philiprehberger.CreditCardValidator;
// Validate a card number
bool isValid = CreditCard.IsValid("4111111111111111"); // true
// Detect brand
CardBrand brand = CreditCard.DetectBrand("4111111111111111"); // Visa
// Mask for display
string masked = CreditCard.Mask("4111111111111111"); // "************1111"
// Format with spaces
string formatted = CreditCard.Format("4111111111111111"); // "4111 1111 1111 1111"
// Full validation
CardValidation result = CreditCard.Validate("4111111111111111");
// result.IsValid == true, result.Brand == CardBrand.Visa
API
CreditCard
| Method | Description |
|---|---|
IsValid(string number) | Returns true if the number passes the Luhn check. |
DetectBrand(string number) | Returns the CardBrand based on the BIN prefix. |
Mask(string number, char maskChar = '*') | Masks all but the last 4 digits. |
Format(string number) | Formats the number with spaces in groups of 4. |
Validate(string number) | Returns a CardValidation with validity, brand, and errors. |
CardBrand
Enum: Unknown, Visa, MasterCard, Amex, Discover, DinersClub, JCB, UnionPay.
CardValidation
Record: IsValid (bool), Brand (CardBrand), Errors (string[]).
LuhnValidator
| Method | Description |
|---|---|
IsValid(string digits) | Luhn mod-10 check. Ignores spaces and dashes. |
BrandDetector
| Method | Description |
|---|---|
Detect(string number) | Detects brand from BIN (first 6 digits). |
Development
dotnet build src/Philiprehberger.CreditCardValidator.csproj --configuration Release
Support
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