Use Markup for Annotations in PDF | VB.NETByteScout PDF SDK

Use Markup for Annotations in PDF | VB.NET

Program.vb:

VB
Imports System.Drawing
Imports Bytescout.PDF

''' <summary>
''' This example demonstrates how to add markup annotations.
''' </summary>
Class Program

    Shared Sub Main()

        ' Create new document
        Dim pdfDocument = New Document()
        pdfDocument.RegistrationName = "demo"
        pdfDocument.RegistrationKey = "demo"

        ' If you wish to load an existing document uncomment the line below And comment the Add page section instead
        ' pdfDocument.Load(".\existing_document.pdf")

        ' Add page
        Dim page = New Page(PaperFormat.A4)
        pdfDocument.Pages.Add(page)

        ' Draw sample markup annotations

        Dim squareAnnotation = New SquareAnnotation(20, 20, 80, 80)
        squareAnnotation.BackgroundColor = New ColorRGB(255, 240, 240)
        squareAnnotation.BorderStyle.Style = BorderStyle.Dashed
        squareAnnotation.BorderStyle.DashPattern = New DashPattern(New Single() {3, 1, 3})
        page.Annotations.Add(squareAnnotation)

        Dim circleAnnotation = New CircleAnnotation(120, 20, 80, 80)
        circleAnnotation.BackgroundColor = New ColorRGB(240, 250, 240)
        circleAnnotation.Color = New ColorRGB(128, 0, 128)
        circleAnnotation.BorderEffect.Effect = BorderEffect.Cloudy
        circleAnnotation.BorderEffect.Intensity = 2
        page.Annotations.Add(circleAnnotation)

        Dim lineAnnotation = New LineAnnotation(20, 180, 100, 120)
        lineAnnotation.Color = New ColorRGB(255, 0, 0)
        lineAnnotation.StartLineStyle = LineEndingStyle.Butt
        lineAnnotation.EndLineStyle = LineEndingStyle.OpenArrow
        page.Annotations.Add(lineAnnotation)

        Dim pp = {New PointF(120, 120), New PointF(130, 130), New PointF(140, 120), New PointF(150, 130), New PointF(160, 120), New PointF(170, 130)}
        Dim points = New PointsArray(pp)
        Dim polylineAnnotation = New PolylineAnnotation(points)
        polylineAnnotation.BorderStyle.Width = 2
        page.Annotations.Add(polylineAnnotation)

        ' Save document to file
        pdfDocument.Save("result.pdf")

        ' Cleanup 
        pdfDocument.Dispose()

        ' Open document in default PDF viewer app
        Process.Start("result.pdf")

    End Sub

End Class