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Reduce CPU Usage | VB.NET
Program.vb:
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