How to Read Multiple Barcodes with IronBarcode: Live Demo Recap

What Did the Webinar Cover About Barcode Generation?

Shadman began by explaining how easy it is to generate barcodes with just a few lines of C# code using IronBarcode. The tool supports a wide range of barcode formats and makes it simple to customize output as PNG or PDF. This is ideal for industries needing fast and reliable barcode generation, from manufacturing to logistics.

The IronBarcode library provides developers with a complete API that handles the complex mathematics and rendering required for barcode generation. Whether you need to create simple 1D barcodes like Code 128 and UPC-A, or more complex 2D formats like QR codes and Data Matrix, the library abstracts away the technical details while giving you full control over appearance and encoding options.

// Example C# code to generate various barcode formats using IronBarcode

using IronBarCode;

// Generate a QR code with custom text
BarcodeWriter.CreateBarcode("Hello World!", BarcodeEncoding.QRCode)
    .SaveAsPng("HelloWorldQRCode.png");

// Generate a Code 128 barcode with product information
BarcodeWriter.CreateBarcode("PROD-12345-2024", BarcodeEncoding.Code128)
    .ResizeTo(400, 100)  // Custom dimensions in pixels
    .AddBarcodeValueTextBelowBarcode()  // Add human-readable text
    .SaveAsPng("ProductBarcode.png");

// Generate a Data Matrix barcode for compact data storage
BarcodeWriter.CreateBarcode("Compact data for small labels", BarcodeEncoding.DataMatrix)
    .SaveAsPdf("DataMatrixLabel.pdf");

// Example C# code to generate various barcode formats using IronBarcode

using IronBarCode;

// Generate a QR code with custom text
BarcodeWriter.CreateBarcode("Hello World!", BarcodeEncoding.QRCode)
    .SaveAsPng("HelloWorldQRCode.png");

// Generate a Code 128 barcode with product information
BarcodeWriter.CreateBarcode("PROD-12345-2024", BarcodeEncoding.Code128)
    .ResizeTo(400, 100)  // Custom dimensions in pixels
    .AddBarcodeValueTextBelowBarcode()  // Add human-readable text
    .SaveAsPng("ProductBarcode.png");

// Generate a Data Matrix barcode for compact data storage
BarcodeWriter.CreateBarcode("Compact data for small labels", BarcodeEncoding.DataMatrix)
    .SaveAsPdf("DataMatrixLabel.pdf");

The above code snippets demonstrate how to generate different barcode formats with customization options. The library automatically handles encoding rules, error correction, and rendering optimization for each format. For businesses implementing barcode-based inventory systems, this flexibility means you can adapt to any labeling requirement without switching tools.

How Do You Read Multiple Barcode Formats with IronBarcode?

After the generation demo, Craig took over to demonstrate the barcode reading capabilities of IronBarcode.

These features make IronBarcode ideal for complex automation workflows, especially where documents may contain more than one barcode type or when handling bulk data. The library's advanced image processing capabilities can detect and decode barcodes even from imperfect sources — including skewed scans, low-resolution photos, or partially damaged labels. This reliability is crucial for real-world applications where perfect conditions cannot be guaranteed.

// Complete example of reading barcodes with advanced options

using IronBarCode;
using System;
using System.Linq;

// Read all barcodes in a given image file
var results = BarcodeReader.Read(@"exampleImageWithBarcodes.png");

// Process each barcode read with detailed information
foreach (var result in results)
{
    Console.WriteLine($"Value: {result.Value}");
    Console.WriteLine($"Format: {result.BarcodeType}");
    Console.WriteLine($"Position: X={result.X}, Y={result.Y}");
    Console.WriteLine($"Dimensions: {result.Width}x{result.Height}");
    Console.WriteLine("---");
}

// Read with specific options for challenging scenarios
var advancedResults = BarcodeReader.ReadAsync(
    @"lowQualityDocument.pdf",
    new BarcodeReaderOptions
    {
        Speed = ReadingSpeed.Balanced,  // Balance between speed and accuracy
        ExpectMultipleBarcodes = true,   // Improve for multiple barcode detection
        ExpectBarcodeTypes = BarcodeEncoding.QRCode | BarcodeEncoding.Code128,  // Filter specific types
        CropArea = new System.Drawing.Rectangle(100, 100, 500, 500)  // Focus on specific region
    }
).Result;

// Handle results with error checking
if (advancedResults.Any())
{
    Console.WriteLine($"Found {advancedResults.Count()} barcodes in the document");
}

// Complete example of reading barcodes with advanced options

using IronBarCode;
using System;
using System.Linq;

// Read all barcodes in a given image file
var results = BarcodeReader.Read(@"exampleImageWithBarcodes.png");

// Process each barcode read with detailed information
foreach (var result in results)
{
    Console.WriteLine($"Value: {result.Value}");
    Console.WriteLine($"Format: {result.BarcodeType}");
    Console.WriteLine($"Position: X={result.X}, Y={result.Y}");
    Console.WriteLine($"Dimensions: {result.Width}x{result.Height}");
    Console.WriteLine("---");
}

// Read with specific options for challenging scenarios
var advancedResults = BarcodeReader.ReadAsync(
    @"lowQualityDocument.pdf",
    new BarcodeReaderOptions
    {
        Speed = ReadingSpeed.Balanced,  // Balance between speed and accuracy
        ExpectMultipleBarcodes = true,   // Improve for multiple barcode detection
        ExpectBarcodeTypes = BarcodeEncoding.QRCode | BarcodeEncoding.Code128,  // Filter specific types
        CropArea = new System.Drawing.Rectangle(100, 100, 500, 500)  // Focus on specific region
    }
).Result;

// Handle results with error checking
if (advancedResults.Any())
{
    Console.WriteLine($"Found {advancedResults.Count()} barcodes in the document");
}

The code example shows how to read barcodes with both basic and advanced configurations. The BarcodeReaderOptions class provides fine-grained control over the reading process, allowing developers to improve for speed, accuracy, or specific use cases. This level of control is particularly valuable when processing thousands of documents in batch operations or when working with challenging source materials.

What Are the Common Use Cases Across Industries?

Craig also shared practical use cases where IronBarcode is already making an impact:

• Inventory & Asset Management – Track stock levels and automate warehouse operations.

• Document Processing – Extract barcode data from PDFs and scanned files automatically.

• Logistics & Supply Chain – Enable real-time tracking throughout the shipping process.

• Healthcare – Ensure patient safety through accurate identification and medication tracking.

• Payments & Ticketing – Process QR codes for entry validation and digital transactions.

• Manufacturing – Monitor production lines and maintain quality control standards.

• Point-of-Sale (POS) – Speed checkout with instant product barcode scanning.

• Security & ID Verification – Authenticate users through barcode-based credentials.

How Does IronBarcode Handle Single and Multiple Barcode Reads?

Shadman returned to demonstrate how IronBarcode handles both single and multiple barcode reads in real time.

The library's intelligent detection algorithms can identify and process multiple barcodes within a single image or document page, even when they use different encoding formats. This capability is essential for applications like shipping manifests that may contain tracking barcodes, product codes, and routing information all on the same label. The multi-threaded processing engine ensures that even large documents with numerous barcodes are processed efficiently.

Why Should You Use IronBarcode for Your Projects?

With IronBarcode, developers can easily generate and read barcodes across a variety of formats and platforms, including desktop, web, and now even mobile via .NET MAUI. Whether you're building a warehouse tracking system or a retail checkout app, IronBarcode provides the flexibility and performance needed to get the job done fast.

The library's cross-platform support means you can deploy the same barcode logic across Windows, Linux, macOS, iOS, and Android without modification. This write-once, run-anywhere approach significantly reduces development time and maintenance costs. Combined with complete documentation and responsive support, IronBarcode helps teams deliver barcode functionality faster than building from scratch or integrating multiple specialized libraries.

For businesses evaluating barcode solutions, IronBarcode offers several key advantages: no runtime fees for deployment, thread-safe operations for web applications, and compatibility with existing .NET codebases. The library handles edge cases that often trip up simpler solutions, such as reading barcodes from faxed documents, processing batch scans with mixed orientations, or generating barcodes with custom styling to match brand guidelines.

Ready to try it? Get a 30-day Free Trial Now.