Class Luhn

Namespace

Tharga.Toolkit

Assembly

Tharga.Toolkit.Standard.dll

Provides extension methods for computing and validating Luhn check digits.

public static class Luhn

Inheritance

object

Luhn

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

AppendCheckDigit(IList<int>)

Appends the Luhn check digit to the end of a list of digits.

public static IList<int> AppendCheckDigit(this IList<int> digits)

Parameters

digits IList<int>

The list of digits to append the check digit to.

Returns

IList<int>

The original list with the check digit appended.

AppendCheckDigit(int)

Appends the Luhn check digit to an integer by multiplying by 10 and adding the check digit.

public static int AppendCheckDigit(this int digits)

Parameters

digits int

The integer value.

Returns

int

The integer with the check digit appended as the last digit.

AppendCheckDigit(long)

Appends the Luhn check digit to a long integer by multiplying by 10 and adding the check digit.

public static long AppendCheckDigit(this long digits)

Parameters

digits long

The long integer value.

Returns

long

The long integer with the check digit appended as the last digit.

AppendCheckDigit(string)

Appends the Luhn check digit to the end of a string of digit characters.

public static string AppendCheckDigit(this string digits)

Parameters

digits string

The string of digit characters.

Returns

string

The original string with the check digit appended.

CheckDigit(IList<int>)

Computes the Luhn check digit for a list of digits.

public static int CheckDigit(this IList<int> digits)

Parameters

digits IList<int>

The list of digits to compute the check digit for.

Returns

int

The computed Luhn check digit.

CheckDigit(int)

Computes the Luhn check digit for an integer value.

public static int CheckDigit(this int digits)

Parameters

digits int

The integer value to compute the check digit for.

Returns

int

The computed Luhn check digit.

CheckDigit(long)

Computes the Luhn check digit for a long integer value.

public static int CheckDigit(this long digits)

Parameters

digits long

The long integer value to compute the check digit for.

Returns

int

The computed Luhn check digit.

CheckDigit(string)

Computes the Luhn check digit for a string of digit characters.

public static string CheckDigit(this string digits)

Parameters

digits string

The string of digit characters to compute the check digit for.

Returns

string

The computed Luhn check digit as a string.

HasValidCheckDigit(IList<int>)

Validates whether the last digit in the list is a valid Luhn check digit.

public static bool HasValidCheckDigit(this IList<int> digits)

Parameters

digits IList<int>

The list of digits including the check digit as the last element.

Returns

bool

True if the check digit is valid; otherwise, false.

HasValidCheckDigit(int)

Validates whether the last digit of the integer is a valid Luhn check digit.

public static bool HasValidCheckDigit(this int digits)

Parameters

digits int

The integer value including the check digit as the last digit.

Returns

bool

True if the check digit is valid; otherwise, false.

HasValidCheckDigit(long)

Validates whether the last digit of the long integer is a valid Luhn check digit.

public static bool HasValidCheckDigit(this long digits)

Parameters

digits long

The long integer value including the check digit as the last digit.

Returns

bool

True if the check digit is valid; otherwise, false.

HasValidCheckDigit(string)

Validates whether the last character in the string is a valid Luhn check digit.

public static bool HasValidCheckDigit(this string digits)

Parameters

digits string

The string of digit characters including the check digit as the last character.

Returns

bool

True if the check digit is valid; otherwise, false.