Citizen Card Generator

Portuguese Citizen Card document number — 12 characters, digits plus a 3-letter series.

Portugal Validation Generation

Try the demo NuGet: DocumentNumber.Portugal.CitizenCard.Generator

How generation works

The Citizen Card generator builds a structurally valid sample using the same rules the validator enforces — check digits included. Use it for test data and fixtures; never for production records.

Install the package

bash

dotnet add package DocumentNumber.Portugal.CitizenCard.Generator

Generator in C#

Program.cs

using DocumentNumber.Portugal.CitizenCard.Generator;

var generator = new CitizenCardNumberGenerator();
var sample = generator.GenerateDocumentNumber();

Console.WriteLine(sample);

Live example

835099610IP8 — a real Citizen Card value accepted by the validator

Try Citizen Card generation

Runs the exact same library code your application uses. Nothing you enter is stored.

Frequently asked questions

What is Citizen Card?

Portuguese Citizen Card document number — 12 characters, digits plus a 3-letter series.

How does Citizen Card generation work?

The generator builds a structurally valid Citizen Card sample using the same rules the validator enforces — including check digits. Generated values are intended for tests and development only.

How do I install the Citizen Card generator package?

dotnet add package DocumentNumber.Portugal.CitizenCard.Generator

Is the value I enter in the demo stored?

No. Demo inputs are processed in memory for the current request only and are never persisted or shared.