ByteScout Barcode Suite – VB.NET – Split pdf document by found barcode with barcode reader sdk

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ByteScout Barcode Suite – VB.NET – Split pdf document by found barcode with barcode reader sdk

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ByteScout-Barcode-Suite-VB-NET-Split-pdf-document-by-found-barcode-with-barcode-reader-sdk.pdf

How to split pdf document by found barcode with barcode reader sdk in VB.NET with ByteScout Barcode Suite

Learn to code in VB.NET to split pdf document by found barcode with barcode reader sdk with this step-by-step tutorial

The sample shows instructions and algorithm of how to split pdf document by found barcode with barcode reader sdk and how to make it run in your VB.NET application. ByteScout Barcode Suite can split pdf document by found barcode with barcode reader sdk. It can be applied from VB.NET. ByteScout Barcode Suite is the set that includes three different SDK products to generate barcodes, read barcodes and read and write spreadsheets: Barcode SDK, Barcode Reader SDK and Spreadsheet SDK.

The following code snippet for ByteScout Barcode Suite works best when you need to quickly split pdf document by found barcode with barcode reader sdk in your VB.NET application. Follow the instructions from scratch to work and copy the VB.NET code. Enjoy writing a code with ready-to-use sample VB.NET codes.

If you want to try other source code samples then the free trial version of ByteScout Barcode Suite is available for download from our website. Just try other source code samples for VB.NET.

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Module1.vb

      Imports System.IO
Imports System.Text
Imports Bytescout.BarCodeReader

Module Module1

    Sub Main()

        Const inputFile As String = "Barcodes.pdf"

        Console.WriteLine("Reading barcode(s) from image {0}", Path.GetFullPath(inputFile))

        ' Create Bytescout.BarCodeReader.Reader instance
        Dim reader As New Reader()
        reader.RegistrationName = "demo"
        reader.RegistrationKey = "demo"

        ' Set barcode type to find
        reader.BarcodeTypesToFind.Code39 = True

        ' -----------------------------------------------------------------------
        ' NOTE: We can read barcodes from specific page to increase performance .
        ' For sample please refer to "Decoding barcodes from PDF by pages" program.
        ' ----------------------------------------------------------------------- 

        ' Find barcode in PDF document
        reader.ReadFrom(inputFile)


        ' Method 1: Split PDF document in two parts by found barcode
        ' NOTE: In Full version of the SDK this method is unlocked in "PRO" license type only

        reader.SplitDocument("barcodes.pdf", "part1.pdf", "part2.pdf", reader.FoundBarcodes(0).Page + 1)


        ' Method 2: Extract page containing the barcode from PDF document
        ' NOTE: In Full version of the SDK this method is unlocked in "PRO" license type only

        reader.ExtractPageFromDocument("barcodes.pdf", "extracted_page.pdf", reader.FoundBarcodes(0).Page + 1)


        ' Method 3: Split PDF document into parts in one pass.
        ' NOTE: In Full version of the SDK this method is unlocked in "PRO" license type only.

        Dim pageRanges As StringBuilder = New StringBuilder()

        ' Create string containing page ranges to extract in the form "1-4,6-8,10-11,12-". Page numbers are 1-based!
        For i As Integer = 0 To reader.FoundBarcodes.Length - 1

            Dim barcode As FoundBarcode = reader.FoundBarcodes(i)

            ' Add pages before the first barcode found
            If i = 0 And barcode.Page > 0 Then
                pageRanges.Append("1")
                If barcode.Page > 1 Then
                    pageRanges.Append("-")
                    pageRanges.Append(barcode.Page)
                End If
                pageRanges.Append(",")
            End If

            ' Add page with barcode
            pageRanges.Append(barcode.Page + 1) ' +1 because we skip the page with barcode and another +1 because need 1-based page numbers

            ' Add range untill the next barcode
            If i < reader.FoundBarcodes.Length - 1 Then
                If reader.FoundBarcodes(i + 1).Page - barcode.Page > 1 Then
                    pageRanges.Append("-")
                    pageRanges.Append(reader.FoundBarcodes(i + 1).Page)
                End If
                pageRanges.Append(",")
            Else
                ' for the last found barcode add ending "-" meaning "to the last page"
                pageRanges.Append("-")
            End If
        Next

        ' Split document 
        Dim splittedParts As String() = reader.SplitDocument("barcodes.pdf", pageRanges.ToString())
        ' The method returns array of file names. Rename files as desired.

        ' Cleanup
        reader.Dispose()

        For Each fileName As String In splittedParts
            Console.WriteLine(fileName)
        Next

        Console.WriteLine("Press enter key to exit...")
        Console.ReadLine()

    End Sub

End Module