ByteScout PDF Suite – VB.NET – Get Selection Points with PDF Viewer UI Application with PDF Viewer SDK

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ByteScout PDF Suite – VB.NET – Get Selection Points with PDF Viewer UI Application with PDF Viewer SDK

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ByteScout-PDF-Suite-VB-NET-Get-Selection-Points-with-PDF-Viewer-UI-Application-with-PDF-Viewer-SDK.pdf

How to get selection points with PDF viewer UI application with PDF viewer SDK in VB.NET and ByteScout PDF Suite

Continuous learning is a crucial part of computer science and this tutorial shows how to get selection points with PDF viewer UI application with PDF viewer SDK in VB.NET

The code displayed below will guide you to install an VB.NET app to get selection points with PDF viewer UI application with PDF viewer SDK. ByteScout PDF Suite can get selection points with PDF viewer UI application with PDF viewer SDK. It can be applied from VB.NET. ByteScout PDF Suite is the set that includes 6 SDK products to work with PDF from generating rich PDF reports to extracting data from PDF documents and converting them to HTML. This bundle includes PDF (Generator) SDK, PDF Renderer SDK, PDF Extractor SDK, PDF to HTML SDK, PDF Viewer SDK and PDF Generator SDK for Javascript.

The following code snippet for ByteScout PDF Suite works best when you need to quickly get selection points with PDF viewer UI application with PDF viewer SDK in your VB.NET application. Follow the instructions from scratch to work and copy the VB.NET code. If you want to use these VB.NET sample examples in one or many applications then they can be used easily.

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

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Form1.Designer.vb

      Partial Class Form1
	''' <summary>
	''' Required designer variable.
	''' </summary>
	Private components As System.ComponentModel.IContainer = Nothing

	''' <summary>
	''' Clean up any resources being used.
	''' </summary>
	''' <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
	Protected Overrides Sub Dispose(disposing As Boolean)
		If disposing AndAlso (components IsNot Nothing) Then
			components.Dispose()
		End If
		MyBase.Dispose(disposing)
	End Sub

	#Region "Windows Form Designer generated code"

	''' <summary>
	''' Required method for Designer support - do not modify
	''' the contents of this method with the code editor.
	''' </summary>
	Private Sub InitializeComponent()
        Me.tsbOpen = New System.Windows.Forms.ToolStripButton()
        Me.toolStrip1 = New System.Windows.Forms.ToolStrip()
        Me.pdfViewerControl1 = New Bytescout.PDFViewer.PDFViewerControl()
        Me.txtSelectionPixel = New System.Windows.Forms.TextBox()
        Me.txtSelectionPDFUnit = New System.Windows.Forms.TextBox()
        Me.label2 = New System.Windows.Forms.Label()
        Me.label1 = New System.Windows.Forms.Label()
        Me.btnGetSelectionPoints = New System.Windows.Forms.Button()
        Me.toolStrip1.SuspendLayout()
        Me.SuspendLayout()
        '
        'tsbOpen
        '
        Me.tsbOpen.Image = Global.Sample_UI_Application.My.Resources.Resources.folder_page
        Me.tsbOpen.ImageTransparentColor = System.Drawing.Color.Magenta
        Me.tsbOpen.Name = "tsbOpen"
        Me.tsbOpen.Size = New System.Drawing.Size(99, 24)
        Me.tsbOpen.Text = "&Open PDF"
        '
        'toolStrip1
        '
        Me.toolStrip1.ImageScalingSize = New System.Drawing.Size(20, 20)
        Me.toolStrip1.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.tsbOpen})
        Me.toolStrip1.Location = New System.Drawing.Point(0, 0)
        Me.toolStrip1.Name = "toolStrip1"
        Me.toolStrip1.Size = New System.Drawing.Size(1240, 27)
        Me.toolStrip1.TabIndex = 1
        Me.toolStrip1.Text = "toolStrip1"
        '
        'pdfViewerControl1
        '
        Me.pdfViewerControl1.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _
            Or System.Windows.Forms.AnchorStyles.Left) _
            Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles)
        Me.pdfViewerControl1.BackColor = System.Drawing.SystemColors.ButtonShadow
        Me.pdfViewerControl1.Location = New System.Drawing.Point(0, 129)
        Me.pdfViewerControl1.Margin = New System.Windows.Forms.Padding(4)
        Me.pdfViewerControl1.MouseMode = Bytescout.PDFViewer.MouseMode.Selection
        Me.pdfViewerControl1.Name = "pdfViewerControl1"
        Me.pdfViewerControl1.RegistrationKey = Nothing
        Me.pdfViewerControl1.RegistrationName = Nothing
        Me.pdfViewerControl1.ResetRotationOnPageChange = False
        Me.pdfViewerControl1.Scale = 100
        Me.pdfViewerControl1.SelectionColor = System.Drawing.Color.Red
        Me.pdfViewerControl1.ShowImageObjects = True
        Me.pdfViewerControl1.ShowTextObjects = True
        Me.pdfViewerControl1.ShowVectorObjects = True
        Me.pdfViewerControl1.Size = New System.Drawing.Size(1240, 532)
        Me.pdfViewerControl1.TabIndex = 0
        '
        'txtSelectionPixel
        '
        Me.txtSelectionPixel.Font = New System.Drawing.Font("Microsoft Sans Serif", 10.2!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtSelectionPixel.Location = New System.Drawing.Point(470, 84)
        Me.txtSelectionPixel.Multiline = True
        Me.txtSelectionPixel.Name = "txtSelectionPixel"
        Me.txtSelectionPixel.ReadOnly = True
        Me.txtSelectionPixel.Size = New System.Drawing.Size(761, 25)
        Me.txtSelectionPixel.TabIndex = 11
        '
        'txtSelectionPDFUnit
        '
        Me.txtSelectionPDFUnit.Font = New System.Drawing.Font("Microsoft Sans Serif", 10.2!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.txtSelectionPDFUnit.Location = New System.Drawing.Point(470, 40)
        Me.txtSelectionPDFUnit.Multiline = True
        Me.txtSelectionPDFUnit.Name = "txtSelectionPDFUnit"
        Me.txtSelectionPDFUnit.ReadOnly = True
        Me.txtSelectionPDFUnit.Size = New System.Drawing.Size(761, 25)
        Me.txtSelectionPDFUnit.TabIndex = 10
        '
        'label2
        '
        Me.label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Underline), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.label2.Location = New System.Drawing.Point(187, 84)
        Me.label2.Name = "label2"
        Me.label2.RightToLeft = System.Windows.Forms.RightToLeft.Yes
        Me.label2.Size = New System.Drawing.Size(277, 25)
        Me.label2.TabIndex = 9
        Me.label2.Text = "Selection in Pixels"
        '
        'label1
        '
        Me.label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 12.0!, CType((System.Drawing.FontStyle.Bold Or System.Drawing.FontStyle.Underline), System.Drawing.FontStyle), System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.label1.Location = New System.Drawing.Point(187, 40)
        Me.label1.Name = "label1"
        Me.label1.RightToLeft = System.Windows.Forms.RightToLeft.Yes
        Me.label1.Size = New System.Drawing.Size(277, 25)
        Me.label1.TabIndex = 8
        Me.label1.Text = "Selection in PDF Units"
        '
        'btnGetSelectionPoints
        '
        Me.btnGetSelectionPoints.Font = New System.Drawing.Font("Microsoft Sans Serif", 10.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.btnGetSelectionPoints.Location = New System.Drawing.Point(9, 40)
        Me.btnGetSelectionPoints.Name = "btnGetSelectionPoints"
        Me.btnGetSelectionPoints.Size = New System.Drawing.Size(172, 69)
        Me.btnGetSelectionPoints.TabIndex = 7
        Me.btnGetSelectionPoints.Text = "Get Selection Points"
        Me.btnGetSelectionPoints.UseVisualStyleBackColor = True
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(8.0!, 16.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.ClientSize = New System.Drawing.Size(1240, 663)
        Me.Controls.Add(Me.txtSelectionPixel)
        Me.Controls.Add(Me.txtSelectionPDFUnit)
        Me.Controls.Add(Me.label2)
        Me.Controls.Add(Me.label1)
        Me.Controls.Add(Me.btnGetSelectionPoints)
        Me.Controls.Add(Me.pdfViewerControl1)
        Me.Controls.Add(Me.toolStrip1)
        Me.Margin = New System.Windows.Forms.Padding(4)
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.toolStrip1.ResumeLayout(False)
        Me.toolStrip1.PerformLayout()
        Me.ResumeLayout(False)
        Me.PerformLayout()

    End Sub

    Private WithEvents tsbOpen As Windows.Forms.ToolStripButton
    Private WithEvents toolStrip1 As Windows.Forms.ToolStrip
    Private WithEvents pdfViewerControl1 As Bytescout.PDFViewer.PDFViewerControl
    Private WithEvents txtSelectionPixel As Windows.Forms.TextBox
    Private WithEvents txtSelectionPDFUnit As Windows.Forms.TextBox
    Private WithEvents label2 As Windows.Forms.Label
    Private WithEvents label1 As Windows.Forms.Label
    Private WithEvents btnGetSelectionPoints As Windows.Forms.Button

#End Region
End Class

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Form1.vb

      Imports System.Drawing
Imports System.Windows.Forms

Partial Public Class Form1
    Inherits Form

    Public Sub New()
        InitializeComponent()

        ' Assign default document
        pdfViewerControl1.InputFile = "sample.pdf"

        ' Initially set selection
        pdfViewerControl1.Selection = New Rectangle() {New Rectangle(20, 20, 100, 100)}

        ' Get Selection Information
        GetSelectionInformation()

    End Sub

    Private Sub tsbOpen_Click(ByVal sender As Object, ByVal e As EventArgs) Handles tsbOpen.Click

        Using openFileDialog As New OpenFileDialog()

            openFileDialog.Title = "Open PDF Document"
            openFileDialog.Filter = "PDF Files (*.pdf)|*.pdf|All Files|*.*"

            If openFileDialog.ShowDialog() = DialogResult.OK Then

                Me.Text = openFileDialog.FileName

                Cursor = Cursors.WaitCursor

                Try
                    pdfViewerControl1.InputFile = openFileDialog.FileName
                Catch exception As Exception
                    MessageBox.Show(exception.Message)
                Finally
                    Cursor = Cursors.[Default]
                End Try

            End If

        End Using

    End Sub

    Private Sub btnGetSelectionPoints_Click(sender As Object, e As EventArgs) Handles btnGetSelectionPoints.Click
        GetSelectionInformation()
    End Sub

    Private Sub GetSelectionInformation()
        If pdfViewerControl1.SelectionInPoints.Length > 0 Then

            ' If need to get selection in PDF format then use .SelectionInPoints that returns coordinates in PDF points. 
            ' PDF points can be used with other SDK to extract text, draw on pdf, add text, images etc. 
            ' These PDF points coordinates are staying the same with any rendering resolution for PDF because resolution affects only how pdf Is converted into displaying image.
            Dim selectionInPoints As RectangleF = pdfViewerControl1.SelectionInPoints(0)
            txtSelectionPDFUnit.Text = String.Format("Top={0}, Left={1}, Bottom={2}, Right={3}, Width={4}, Height={5}",
                    selectionInPoints.Top,
                    selectionInPoints.Left,
                    selectionInPoints.Bottom,
                    selectionInPoints.Right,
                    selectionInPoints.Width,
                    selectionInPoints.Height)

            ' If you need to draw on screen on the control then please use .Selection property to get coordinates. 
            Dim selectionInPixels As RectangleF = pdfViewerControl1.Selection(0)
            txtSelectionPixel.Text = String.Format("Top={0}, Left={1}, Bottom={2}, Right={3}, Width={4}, Height={5}",
                selectionInPixels.Top.ToString(),
                selectionInPixels.Left.ToString(),
                selectionInPixels.Bottom.ToString(),
                selectionInPixels.Right.ToString(),
                selectionInPixels.Width,
                selectionInPixels.Height)

        Else
            MessageBox.Show("Selection not available.")
        End If
    End Sub


End Class

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Explore ByteScout PDF Suite Documentation

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ON-DEMAND REST WEB API

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Explore Web API Docs

Explore Web API Samples

Program.vb

      Imports System.Collections.Generic
Imports System.Windows.Forms

NotInheritable Class Program
	Private Sub New()
	End Sub
	''' <summary>
	''' The main entry point for the application.
	''' </summary>
	<STAThread> _
	Friend Shared Sub Main()
		Application.EnableVisualStyles()
		Application.SetCompatibleTextRenderingDefault(False)
		Application.Run(New Form1())
	End Sub
End Class