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Home > ASP.NET Barcode Reader > ASP.NET Barcode Reading > How to Read & Decode UPC-A Barcode in ASP.NET Website

ASP.NET UPC-A Barcode Reader & Scanner

How to Scan & Recognise UPC-A Barcode in ASP.NET Web Applications

Professional UPC-A barcode scanner, compatible with both C# & VB.NET class
Perfectly integrated in ASP.NET development tools and support .NET 2.0 & above
Support UPC-A barcode recognition from png, gif, tiff, bmp and jpeg image files
Easily and quickly decode & read UPC-A barcode images in ASP.NET web project
Own special function to improve scanning speed in ASP.NET web solutions
Offer Windows Application Distribution License and Server License

Integrate UPC-A Barcode Reader into ASP.NET Application

Please integrate BarcodeLib.BarcodeReader.dll to your ASP.NET project by adding reference.

Run ASP.NET UPC-A Barcode Scanner Using C# Class Library

Here is free C# code to read & decode all UPC-A barcodes from an image source (For example: a gif image file called "upca-aspnet").

     string[] results = BarcodeReader.read("c:/upca-aspnet.gif", BarcodeReader.UPCA);

Run ASP.NET UPC-A Barcode Decoder Using VB.NET Class Library

Sample VB.NET code is listed here to help users decode & scan all UPC-A barcodes from an image source (For example: a gif image file called "upca-aspnet").

     Dim datas() As String = BarcodeReader.read("c:/upca-aspnet.gif", BarcodeReader.UPCA)

Enhance UPC-A Barcode Recognition Rate in ASP.NET Website

ASP.NET UPC-A Barcode Reader from BarcodeLib.com owns the capacity to speed up decoding rate in two situations.

Situation 1: Read a maximum UPC-A barcode from an image file:
Common UPC-A barcode readers will use total 5 algorithms and scan the whole image from 4 directions. It is time-consuming. But our barcode reader provide a function called "maxOneBarcodePerPage".

If user sets "maxOneBarcodePerPage" to true, the reader will stop reading after it detects one UPC-A barcode.
Situation 2: Read an UPC-A barcode from a large-size image source:
In the practical applications, an UPC-A barcode is sometimes located in a certain part of a large-size image file. But in general, the reader will scan the whole image to decode an UPC-A barcode. Thus, most recognition time is used to scan the non-barcode region.

So why not direct the reader to only scan the barcode region? To meet this goal, our UPC-A barcode reader offers users the possibility to locate the barcode region. And detailed C# & VB.NET codes are listed below:

For C#.NET UPC-A barcode reading program:

     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-aspnet.gif", BarcodeReader.UPCA, setting);

For VB.NET UPC-A barcode reading program:

     Dim setting As OptimizeSetting = New OptimizeSetting()

     setMaxOneBarcodePerPage(True)

     Dim top20 As ScanArea = New ScanArea(New Drawing.PointF(0.0F, 0.0F), New Drawing.PointF(100.0F, 20.0F))

     Dim bottom20 As ScanArea = New ScanArea(New Drawing.PointF(0.0F, 80.0F), New Drawing.PointF(100.0F, 100.0F))

     Dim areas As List(Of ScanArea) = New List(Of ScanArea)
     areas.Add(top20)
     areas.Add(bottom20)

     setting.setAreas(areas)

     Dim datas() As String = BarcodeReader.read("c:/upca-aspnet.gif", BarcodeReader.UPCA, setting)

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.

ASP.NET UPC-A Barcode Scanning DLL Supported Barcode Types

Apart from ASP.NET UPC-A Barcode Scanner, BarcodeLib.com also provides other linear & 2D barcode readers.

All Linear / 1D Barcodes:

All Matrix / 2D Barcodes:

Read Linear Barcodes in ASP.NET Web: ASP.NET Codabar, ASP.NET Code 39, ASP.NET Code 128, ASP.NET Interleaved 2 of 5, ASP.NET EAN-8, ASP.NET EAN-13, ASP.NET UPC-A, ASP.NET UPC-E.

Read 2D Barcodes in ASP.NET Web: ASP.NET Data Matrix, ASP.NET PDF 417, ASP.NET QR Code.

BarcodeLib.com also depicted other .NET barcode recognition applications:

Barcode .NET Reading, Barcode ASP.NET Reading, Barcode C# Reading, Barcode VB.NET Reading, UPC-A .NET Reading, UPC-A ASP.NET Reading, UPC-A C# Reading, UPC-A VB.NET Reading.