Class EInvoiceExtensions

Namespace

HeroKit.Globalization.Turkey

Assembly

HeroKit.dll

Validation helpers for Turkish e-Fatura and e-Arşiv documents.

public static class EInvoiceExtensions

Inheritance

object

EInvoiceExtensions

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Methods

IsValidEttn(string?)

Checks whether a string is a valid ETTN (Evrensel Tekil Tanımlama Numarası): a UUID in the 8-4-4-4-12 hexadecimal format.

public static bool IsValidEttn(this string? value)

Parameters

value string

The ETTN, for example "51d3bb18-9650-4c8e-825d-5a7f845be630".

Returns

bool

True if the value is a non-empty UUID with hyphens; otherwise false.

IsValidGibInvoiceNumber(string?)

Checks whether a string is a valid e-Fatura or e-Arşiv invoice number in the GİB format (3-character series, 4-digit year, 9-digit sequence).

public static bool IsValidGibInvoiceNumber(this string? value)

Parameters

value string

The invoice number, for example "ABC2026000000001".

Returns

bool

True if the value has the GİB format; otherwise false.

Examples

"ABC2026000000001".IsValidGibInvoiceNumber(); // true
"ABC2026000000000".IsValidGibInvoiceNumber(); // false: sequence starts at 1