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Home > .NET Barcode Reader Library > Barcode Recognition Using VB.NET > VB.NET Barcode Scanning Component for EAN-8
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How to Read & Decode EAN-8 Barcode Using VB.NET Class Code

Offer Free Sample VB.NET Code for Reading & Recognizing EAN-8 Barcode
  • High-quality EAN-8 barcode reading library for VB.NET class applications
  • Built in managed C# and own high compatibility with common developing tools
  • Read EAN-8 barcode in Console applications, ASP.NET Web & .NET WinForms applications
  • Decode EAN-8 barcode from png, jpeg, gif and tiff image files using VB.NET code
  • Able to recognize all EAN-8 barcodes from the target image file using VB.NET
  • Offer royalty-free and flexible developer license for VB.NET programmers
How to Integrate EAN-8 Decoding DLL into VB.NET Applications
  1. Open your VB.NET project and right click in the Solution Explorer.
  2. Find "BarcodeLib.BarcodeReader.dll" by selecting "Add Reference...".
  3. Then this EAN-8 .NET barcode decoding library will be added successfully to your VB.NET project.
How to Read EAN-8 Barcode in VB.NET Project
You can successfully decode & read all the EAN-8 barcodes in the gif image file called ean8-barcode by using following VB.NET class code.
     Dim datas() As String = BarcodeReader.read("c:/ean8-barcode.gif", BarcodeReader.EAN8)
How to Customize EAN-8 Barcode Scanning Rate in VB.NET Applications
Read & Recognize Large-Size EAN-8 Barcode Using VB.NET Class Code
When you are reading certain maximum EAN-8 barcode from an image file, you can largely reducing the scanning time by activating the property of "maxOneBarcodePerPage".
If you set "maxOneBarcodePerPage" to true, it will stop reading & decoding after it detects the EAN-8 barcode. Otherwise, it will use five algorithms to read this image file and each algorithm will decode the image file from four directions.
Read & Decode EAN-8 Barcode by Scanning Partial Image File in VB.NET Project
When you are scanning an EAN-8 barcode which is only a small part of the target image file, then you can let the VB.NET EAN-8 barcode decoder scan & read EAN-8 barcode in that small area.
For example, the EAN-8 barcode is located in the top 20% and bottom 20% area of target image file, you can direct the VB.NET barcode decoding dll to scan EAN-8 barcode just in that area. And following VB.NET class code can help you achieve that:
     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:/ ean8-barcode.gif", BarcodeReader.EAN8, setting)
Note: This VB.NET EAN-8 barcode scanning component set the default value of the most left top point as (0%, 0%) and that of the most right bottom point as (100%, 100%).
VB.NET Barcode Decoder SDK Supports Others Barcodes
Other EAN-8 barcode scanning & reading controls:
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