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Home > .NET Barcode Scanner > C#.NET Barcode Scanning Guide > How to Recognize UPC-A Barcode Images Using C# Class Library
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C# UPC-A Barcode Scanner & Reader DLL in .NET

Use C#.NET Class Library to Read & Decode UPC-A Barcode
  • Highly-rated C# UPC-A barcode scanning control for .NET developers
  • Able to read & scan UPC-A barcode in .NET & ASP.NET web applications
  • Read & scan UPC-A barcode using C# class codes in .NET programs
  • Decode major linear & 2D barcodes, including C# QR Code, using C#.NET library
  • Recognize UPC-A barcode by scanning a certain part of the source image
  • Support major image formats recognition, like gif, png, bmp, tiff and jpeg
C#.NET UPC-A Bar Coding Reader Library Integration
  1. It is extremely easy to integrate our C#.NET UPC-A Bar Coding Reader Component into your .NET development environment.
  2. Download & unzip the trial package, find BarcodeLib.BarcodeReader.dll, and add it to your project reference.
How to Use Free C# Code to Decode UPC-A Barcode in .NET Project
     string[] results = BarcodeReader.read("c:/upca-csharp.gif", BarcodeReader.UPCA);
With above C# code, you can decode all UPC-A barcode from a gif image file named "upca-csharp".
Distinguishing Features of C# UPC-A Barcode Encoding SDK
With two powerful functions, the C# UPC-A barcode encoding SDK from BarcodeLib.com successfully stands out from other barcode scanners.

Function 1: Read & decode a maximum UPC-A barcode with little scanning time

There is a property "maxOneBarcodePerPage" in our C#.NET UPC-A barcode encoding SDK.
  1. If you set it to true, the reader will stop scanning once it detects one barcode.
  2. If you set it to false, the reader will use total 5 algorithms and each will scan the whole source file from 4 directions.

Function 2: Only scan the barcode region to decode UPC-A barcode

In general, a barcode reader will scan both barcode area and non-barcode area. So it is an essential way to enhance the productivity by removing the recognition time spent in scanning the non-barcode region. By introducing the concept of coordinates-positioning, our barcode reader could easily locate the scanning region.
  1. Note: the most left top point is (0%, 0%), and most right bottom point is (100%, 100%). The point X, Y values are expressed in percentage of the whole image.
For example, if the UPC-A barcode is located in the top 20% & bottom 20% area, we could direct the reader only to scan in this area by using following C#.NET programming codes:
     OptimizeSetting setting = new OptimizeSetting();
    
     setting.setMaxOneBarcodePerPage(true);
    
     ScanArea top20 = new ScanArea(new PointF(0.0F, 0.0F), new PointF(100.0F, 20.0F));

     ScanArea bottom20 = new ScanArea(new PointF(0.0F, 80.0F), new PointF(100.0F, 100.0F));
    
     List<ScanArea> areas = new List<ScanArea>();
     areas.Add(top20);
     areas.Add(bottom20);
    
     setting.setAreas(areas);
    
     string[] results = BarcodeReader.read("c:/upca-csharp.gif", BarcodeReader.UPCA, setting);
Other Barcode Types Compatible with UPC-A C#.NET Barcode Reader
The C#.NET UPC-A Barcode Reader Control from BarcodeLib.com also supports those popular linear & 2D barcodes.
Scan 1D Barcode Images:
Scan 2D Barcode Images:
All Readable Linear Barcodes in C#: Codabar in C#, Code 39 in C#, Code 128 in C#, Interleaved 2 of 5 in C#, EAN-8 in C#, EAN-13 in C#, UPC-A in C#, UPC-E in C#.

All Readable Matrix Barcodes in C#: Data Matrix in C#, PDF 417 in C#, QR Code in C#.
Please read UPC-A barcode reader used in other .NET projects:




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