Scan QR Code in C#.

Overview

QR codes are widely used for efficient and reliable data transfer across various applications, including logistics and marketing. This article explores how to programmatically scan QR codes in C# using the $99 Aspose.BarCode for .NET plugin, a powerful library designed for seamless 2D barcode processing.

Key Features:

  • Extensive Format Support: Decode QR codes, Data Matrix, Aztec, and other 2D barcodes.
  • Flexible Input Options: Scan barcodes from images, streams, or webcam feeds.
  • Robust Recognition: Efficiently handles rotated, distorted, or noisy QR code images.
  • Cost-Effective Solution: An ideal choice for enterprise developers and hobbyists alike.

This guide covers:

C# QR Code Scanner API

Aspose.BarCode for .NET provides a comprehensive solution for reading QR codes and various other barcode formats programmatically. The library serves as a best C# QR code reader library and an excellent open source alternative for projects needing a .NET QR code reader API. You can utilize it for:

  • WPF Applications: Seamlessly integrate into desktop applications.
  • ASP.NET Projects: Facilitate server-side barcode scanning.
  • Cross-Platform Apps: Full support for .NET Core and .NET MAUI.

Installation

Get started by installing the API via NuGet:

PM> Install-Package Aspose.BarCode

For those looking for a cheap C# QR code scanner, consider also checking other libraries, but this library is renowned for its functionality. You can also download the DLL for manual integration.

Scan QR Code in C#

Follow these steps to scan QR codes from an image file:

  1. Initialize the BarCodeReader class with the DecodeType.QR parameter.
  2. Process the barcode using the ReadBarCodes() method.
  3. Extract data such as barcode text and type from the results.

The following code sample demonstrates how to scan a QR code in C#:

Scan QR Code from a Stream in C#

To read QR codes from a stream, execute the following steps:

  1. Create an instance of the BarCodeReader class, specifying DecodeType.QR.
  2. Use the ReadBarCodes() method to scan the stream.
  3. Retrieve the decoded data from the result.

The code sample below illustrates how to scan a QR code from a stream in C#:

Applications of QR Code Scanning

Key Use Cases:

  • Retail: Streamline inventory management and point-of-sale systems.
  • Healthcare: Enhance patient identification and pharmaceutical tracking.
  • Logistics: Optimize shipment tracking with QR-based labeling.
  • Marketing: Create interactive campaigns with embedded QR code links.

Free License and Resources

Get a Free Temporary License

To experience the full capabilities of the API, request a free temporary license and unlock unrestricted access to all features.

Learning Resources

Conclusion

This tutorial demonstrated how to:

  • Programmatically scan QR codes from files or streams in C#.
  • Utilize Aspose.BarCode’s advanced features for robust and efficient QR code decoding.

With its high performance and affordability, the $99 Aspose.BarCode Reader Plugin is an excellent choice for developers seeking a reliable .NET 6 QR code scanner. Explore more features in the documentation or seek help on our support forum.

See Also