ByteScout Premium Suite – VB.NET – Add custom images to pdf document with barcode sdk

Home
/
Articles
/
ByteScout Premium Suite – VB.NET – Add custom images to pdf document with barcode sdk

printable version:
ByteScout-Premium-Suite-VB-NET-Add-custom-images-to-pdf-document-with-barcode-sdk.pdf

How to add custom images to pdf document with barcode sdk in VB.NET and ByteScout Premium Suite

Learn to add custom images to pdf document with barcode sdk in VB.NET

Add custom images to pdf document with barcode sdk is simple to apply in VB.NET if you use these source codes below. Want to add custom images to pdf document with barcode sdk in your VB.NET app? ByteScout Premium Suite is designed for it. ByteScout Premium Suite is the bundle that includes twelve SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording.

The SDK samples given below describe how to quickly make your application do add custom images to pdf document with barcode sdk in VB.NET with the help of ByteScout Premium Suite. Follow the instructions from scratch to work and copy the VB.NET code. Complete and detailed tutorials and documentation are available along with installed ByteScout Premium Suite if you’d like to learn more about the topic and the details of the API.

Our website gives trial version of ByteScout Premium Suite for free. It also includes documentation and source code samples.

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 System.Diagnostics
Imports System.Drawing
Imports Bytescout.BarCode

' This example demostrates adding of barcode together with some custom images (e.g. target marks) to PDF document.
' Also shows the manual calculation of barcode size from inches to pixels and document units (points).
' Task: place Code39 barcode of 2" x 3/8" size at 2" from top-right corner and two target marks at 1" from top-right and bottom-left corners.

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

            ' Create Barcode instance and set it up
            Dim barcode As New Barcode("demo", "demo")
            barcode.Symbology = SymbologyType.Code39
            barcode.Value = "00090112"
            barcode.DrawCaption = True
            barcode.CaptionFont = New Font("Courier", 12.0F, FontStyle.Bold, GraphicsUnit.Point)
            barcode.DrawQuietZones = False
            barcode.ResolutionX = 300 ' High resolution for better quality on document scaling and printing.
            barcode.ResolutionY = 300

            ' Compute barcode image dimension from inches to pixels at 300 DPI:

            Dim barHeight As Integer = CInt(Math.Truncate(3.0F / 8 * 300)) ' = 3/8" * 300 DPI = height of bars
            Dim captionHeight As Integer = CInt(Math.Truncate(barcode.CaptionFont.GetHeight(barcode.ResolutionY)))
            Dim captionGap As Integer = CInt(Math.Truncate(1.0F / 8 * 300)) ' = 1/8" gap

            Dim barcodeImageWidth As Integer = 2 * 300 ' = 2" * 300 DPI = width of barcode
            Dim barcodeImageHeight As Integer = barHeight + captionGap + captionHeight + 28 ' 28 = height of watermark text (painted in Trial version only)

            ' Get final barcode image:

            barcode.BarHeight = barHeight
            barcode.FitInto(barcodeImageWidth, barcodeImageHeight, UnitOfMeasure.Pixel)
            Dim barcodeImage As Image = barcode.GetImage()
            
            ' Arrays of images and points to apply to PDF document
            Dim images As Image() = New Image(2) {}
            Dim points As Point() = New Point(2) {}

            ' Compute coordinates of barcode image and target marks ar 72 DPI
            ' (page size is 8.5" x 11", PDF document resolution is always 72 DPI):

            Dim x As Integer = CInt(Math.Truncate(8.5F * 72 - 2 * 72 - barcodeImageWidth / 300.0F * 72)) ' = page width - 2" - barcodeImageWidth at 72 DPI = X coordinate to put the barcode image
            Dim y As Integer = 2 * 72 ' = 2" - Y coordinate to put the barcode image

            ' Put barcode image into array
            images(0) = barcodeImage
            points(0) = New Point(x, y)

            ' Load target mark image.
            ' TargetMark.png is 1/8" 300 DPI image (38x38 pixels) 
            Dim targetMarkImage As Image = Image.FromFile("TargetMark.png")

            ' Coordinates of top-right target mark
            x = CInt(Math.Truncate(8.5F * 72 - 1 * 72 - 1.0F / 8 * 72)) ' = pageWidth - 1" - target mark width (1/8") at 72DPI = X coordinate to put the barcode image
            y = 1 * 72 ' = 1" - Y coordinate to put the barcode image

            ' Put first target mark image into array
            images(1) = targetMarkImage
            points(1) = New Point(x, y)

            ' Coordinates of bottom-left target mark
            x = 1 * 72 ' = 1"
            y = CInt(Math.Truncate(11.0F * 72 - 1 * 72 - 1.0F / 8 * 72)) ' = page height - 1" - target mark height (1/8") at 72DPI

            ' Put second target mark image into array
            images(2) = targetMarkImage
            points(2) = New Point(x, y)

            ' Draw images on all PDF document pages.
            barcode.DrawImagesToPDF("wikipedia.pdf", -1, images, points, "result.pdf")

            ' Cleanup
            barcodeImage.Dispose()
            targetMarkImage.Dispose()
            barcode.Dispose()

            ' Open the result document in default associated application
            Process.Start("result.pdf")

        End Sub
		
	End Class
End Namespace