ByteScout Data Extraction Suite – VB.NET – Reduce cpu usage with barcode reader sdk

Home
/
Articles
/
ByteScout Data Extraction Suite – VB.NET – Reduce cpu usage with barcode reader sdk

printable version:
ByteScout-Data-Extraction-Suite-VB-NET-Reduce-cpu-usage-with-barcode-reader-sdk.pdf

How to reduce cpu usage with barcode reader sdk in VB.NET using ByteScout Data Extraction Suite

How to write a robust code in VB.NET to reduce cpu usage with barcode reader sdk with this step-by-step tutorial

Source code documentation samples give simple and easy method to install a needed feature into your application. ByteScout Data Extraction Suite is the set that includes 3 SDK products for data extraction from PDF, scans, images and from spreadsheets: PDF Extractor SDK, Data Extraction SDK, Barcode Reader SDK. It can be applied to reduce cpu usage with barcode reader sdk using VB.NET.

Want to quickly learn? This fast application programming interfaces of ByteScout Data Extraction Suite for VB.NET plus the guidelines and the code below will help you quickly learn how to reduce cpu usage with barcode reader sdk. This VB.NET sample code is all you need for your app. Just copy and paste the code, add references (if needs to) and you are all set! Complete and detailed tutorials and documentation are available along with installed ByteScout Data Extraction Suite if you’d like to learn more about the topic and the details of the API.

ByteScout Data Extraction Suite free trial version is available on our website. VB.NET and other programming languages are supported.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

Program.vb

      Imports Bytescout.BarCodeReader

Class Program
	Friend Shared Sub Main(args As String())

        ' Barcode reader instance
        Dim reader As New Reader()
        reader.RegistrationName = "demo"
        reader.RegistrationKey = "demo"

        'If you are reading barcodes from PDF Then you may reduce CPU And RAM load Using the following approach:
        '- instead of using All1D Or All2D barcode types, set it to the specific types you have in your documents Like PDF417 Or Code 39. You may set multiple barcode types if you need to
        '- reduce PDF rendering resolution to 200-150 dpi (depends on your document)
        '- set specific pages to read barcodes from. If you have barcodes on 2 first pages only then change the code to read barcodes from first 2 pages only.
        '- if barcodes are always located / printed in the same corner then also specify the area to read from instead of whole page for scanning

        ' Input filename
        Dim inputFileName As String = "barcode_multipage.pdf"

        ' Set specific barcode type to read
        reader.BarcodeTypesToFind.Code128 = True

        ' Reduce PDF rendering resolution
        reader.PDFRenderingResolution = 150

        ' Set specific area to read from
        reader.CustomAreaLeft = 407
        reader.CustomAreaTop = 494
        reader.CustomAreaHeight = 605
        reader.CustomAreaWidth = 999

        ' Set specific page to read from along with filename
        reader.ReadFromPdfFilePage(inputFileName, 1, 1)

        ' Get all found barcodes
        Dim barcodes As FoundBarcode() = reader.FoundBarcodes

        ' Display found barcodes
        Console.WriteLine("Reading barcode(s) from PDF file...")

        For Each barcode As FoundBarcode In barcodes
            Console.WriteLine("Found Barcode - Type: '{0}', Value: '{1}'", barcode.Type, barcode.Value)
        Next

        ' Cleanup
        reader.Dispose()

        Console.WriteLine()
        Console.WriteLine("Press any key to continue.")
        Console.ReadKey()
	End Sub
End Class