IronBarcode.Examples

Runnable C# examples for IronBarcode, a .NET barcode and QR code library that reads and generates Code 39/93/128, UPC-A/E, EAN-8/13, PDF417, Aztec, Data Matrix, QR, Micro QR, and 20+ other symbologies from images, PDFs, and streams.

Install

dotnet add package BarCode

Quickstart

using IronBarCode;

// Generate a barcode and save it
var barcode = BarcodeWriter.CreateBarcode("PKG-2026-88421", BarcodeEncoding.Code128);
barcode.ResizeTo(400, 100);
barcode.SaveAsPng("shipping-label.png");

// Read barcodes back from an image or PDF
var results = BarcodeReader.Read("shipping-label.png");
foreach (var result in results)
{
    Console.WriteLine($"{result.BarcodeType}: {result.Value}");
}

For QR codes, swap in QRCodeWriter.CreateQrCode("https://example.com", 300), which supports error correction levels and CreateQrCodeWithLogo for branded codes. To read barcodes from PDFs, use BarcodeReader.ReadPdf("document.pdf").

For production use, set a license key via License.LicenseKey = "YOUR-KEY". Without one, generated barcodes include a watermark.

What's in this repo

Each folder contains a self-contained .NET project you can open and run:

• examples/ — focused snippets demonstrating individual features
• get-started/ — minimal first projects covering installation and basic generation
• how-to/ — task-oriented guides for specific barcode operations
• quickstart/ — end-to-end project scaffolds
• tutorials/ — longer walkthroughs combining multiple features

Common tasks covered

• Generating linear barcodes: Code 39, Code 93, Code 128, EAN-8, EAN-13, UPC-A, UPC-E, ITF, Codabar, MSI Plessey
• Generating 2D barcodes: QR, Micro QR, Aztec, Data Matrix, PDF417, MaxiCode
• Reading barcodes from images, PDFs, bitmaps, and streams
• Multi-barcode scanning with automatic detection
• Image preprocessing: deskew, denoise, sharpen, threshold, contrast adjustment
• Fluent styling: colors, margins, annotation text, resizing
• QR code customization: error correction levels, embedded logos, color theming
• Export formats: PNG, JPEG, BMP, TIFF, GIF, PDF, HTML, SVG
• Reading with BarcodeReaderOptions for parallel multi-threaded scanning

Platform support

.NET 8, 7, 6, 5, .NET Core, .NET Standard, and .NET Framework. Windows, macOS, Linux, Docker, Azure, and AWS. See the installation docs for environment-specific notes.

Documentation and support

• Full documentation: ironsoftware.com/csharp/barcode/docs
• API reference: ironsoftware.com/csharp/barcode/object-reference/api
• Issues with these examples: file directly on this repository
• Product support: support@ironsoftware.com

About

This repository is maintained by Iron Software. IronBarcode is a commercial library — see licensing for terms and trial details.