How to Scan Barcodes in ASP.NET Barcode Reader

• Purely compiled in Visual C#.NET 2005, compatible with Visual Studio 2005/2008/2010
• Add barcode scanning and reading capabilities to ASP.NET web service projects
• Integrate .NET barcod decoding features into .NET Class Library and Console Application
• Read and return popular 1D & 2D barcodes from digital images, bitmaps and scanned documents
• Scan barcode images from all directions of 360 degrees using free C# & VB.NET class library
• Enable to read several image formats as resources, such as gif, jpeg, png, tiff, and bmp
• Provide affordable ASP.NET Barcode Reader Licenses for redistribution

ASP.NET Barcode Reader Trial Overview

How to Install ASP.NET Barcode Scanner SDK?

1. .NET Version Requirement: .NET Framework 2.0 or later versions should be installed firstly.
2. Add BarcodeLib.BarcodeReader.dll to your Visual Studio ASP.NET project reference.

How to Recognize Barcodes Using C#.NET Class Library?

     string[] results = BarcodeReader.read("c:/ean13-barcode.gif", BarcodeReader.EAN13);

     string[] results = BarcodeReader.read("c:/pdf417-barcode.gif", BarcodeReader.PDF417);

1. Read Maximum One Barcode per Source File

1. Set maxOneBarcodePerPage to true, if there is maximum one barcode per image or per page in tiff or pdf document.
2. If maxOneBarcodePerPage is true, the .net barcode reader library will stop scanning the barcode immediately, once detects one barcode.
3. If maxOneBarcodePerPage is false (default value), the library will use total 5 algorithms and each will scan the whole image from 4 directions.

2. Read A Part of Barcode Image

1. Read the partial image instead of the whole file.
2. If the barcode is always located one specified area in the image, you can set and let the library scan that area only. And it will reduce lots of scanning time, CPU and memory usage.
3. You just specify the left top point and right bottom point of the area (the point X, Y values are expressed in percentage of the whole image, so image most left top point is (0%, 0%), and most right bottom point is (100%, 100%)).

     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:/code39-barcode.gif", BarcodeReader.CODE39, setting);

How to Recognize Barcodes Using VB.NET Class Library?

     Dim datas() As String = BarcodeReader.read("c:/ean13-barcode.gif", BarcodeReader.EAN13)

     Dim datas() As String = BarcodeReader.read("c:/pdf417-barcode.gif", BarcodeReader.PDF417)

     Dim setting As OptimizeSetting = New OptimizeSetting()

     setting.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:/code39-barcode.gif", BarcodeReader.CODE39, setting)

How to Recognize Other ASP.NET 1D & 2D Barcodes?

Recognise 1D Barcodes: Codabar Code 39 / Code 39 Extension Code-128 / GS1-128 / EAN-128 EAN-8, +2, +5 EAN-13, +2, +5 Interleaved 2 of 5 UPC-A, +2, +5 UPC-E, +2, +5

Recognise 2D Barcodes: QR Code PDF-417 Data Matrix