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ByteScout Premium Suite – VB.NET – Gui example for barcode reading with barcode reader sdk

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gui example for barcode reading with barcode reader sdk in VB.NET using ByteScout Premium Suite

gui example for barcode reading with barcode reader sdk in VB.NET

This page explains the steps and algorithm of implementing gui example for barcode reading with barcode reader sdk and how to make it work in your application. Gui example for barcode reading with barcode reader sdk in VB.NET can be applied with ByteScout Premium Suite. ByteScout Premium Suite is the set that includes 12 SDK products from ByteScout including tools and components for PDF, barcodes, spreadsheets, screen video recording.

If you want to quickly learn then these fast application programming interfaces of ByteScout Premium Suite for VB.NET plus the guideline and the VB.NET code below will help you quickly learn gui example for barcode reading with barcode reader sdk. Follow the steps-by-step instructions from the scratch to work and copy and paste code for VB.NET into your editor. Enjoy writing a code with ready-to-use sample VB.NET codes to add gui example for barcode reading with barcode reader sdk functions using ByteScout Premium Suite in VB.NET.

If you want to try other samples for VB.NET then free trial version of ByteScout Premium Suite is available on our website.

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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.label1 = New System.Windows.Forms.Label() Me.buttonBrowse = New System.Windows.Forms.Button() Me.pictureBoxBarcode = New System.Windows.Forms.PictureBox() Me.textBoxFileName = New System.Windows.Forms.TextBox() Me.textBoxResults = New System.Windows.Forms.TextBox() Me.label2 = New System.Windows.Forms.Label() Me.openFileDialog = New System.Windows.Forms.OpenFileDialog() Me.checkBoxAll1D = New System.Windows.Forms.CheckBox() Me.checkBoxAll2D = New System.Windows.Forms.CheckBox() Me.buttonSearch = New System.Windows.Forms.Button() Me.panel1 = New System.Windows.Forms.Panel() DirectCast(Me.pictureBoxBarcode, System.ComponentModel.ISupportInitialize).BeginInit() Me.panel1.SuspendLayout() Me.SuspendLayout() ' ' label1 ' Me.label1.AutoSize = True Me.label1.Location = New System.Drawing.Point(9, 9) Me.label1.Name = "label1" Me.label1.Size = New System.Drawing.Size(120, 13) Me.label1.TabIndex = 0 Me.label1.Text = "Image or PDF file name:" ' ' buttonBrowse ' Me.buttonBrowse.Anchor = CType((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.buttonBrowse.Location = New System.Drawing.Point(792, 23) Me.buttonBrowse.Name = "buttonBrowse" Me.buttonBrowse.Size = New System.Drawing.Size(78, 23) Me.buttonBrowse.TabIndex = 0 Me.buttonBrowse.Text = "Browse..." Me.buttonBrowse.UseVisualStyleBackColor = True AddHandler Me.buttonBrowse.Click, New System.EventHandler(AddressOf Me.buttonBrowse_Click) ' ' pictureBoxBarcode ' Me.pictureBoxBarcode.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.pictureBoxBarcode.Location = New System.Drawing.Point(0, 0) Me.pictureBoxBarcode.Name = "pictureBoxBarcode" Me.pictureBoxBarcode.Size = New System.Drawing.Size(138, 113) Me.pictureBoxBarcode.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize Me.pictureBoxBarcode.TabIndex = 2 Me.pictureBoxBarcode.TabStop = False ' ' textBoxFileName ' Me.textBoxFileName.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.textBoxFileName.Location = New System.Drawing.Point(12, 25) Me.textBoxFileName.Name = "textBoxFileName" Me.textBoxFileName.[ReadOnly] = True Me.textBoxFileName.Size = New System.Drawing.Size(774, 20) Me.textBoxFileName.TabIndex = 0 ' ' textBoxResults ' Me.textBoxResults.Anchor = CType(((System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left) Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.textBoxResults.Location = New System.Drawing.Point(12, 486) Me.textBoxResults.Multiline = True Me.textBoxResults.Name = "textBoxResults" Me.textBoxResults.ScrollBars = System.Windows.Forms.ScrollBars.Both Me.textBoxResults.Size = New System.Drawing.Size(858, 102) Me.textBoxResults.TabIndex = 4 ' ' label2 ' Me.label2.AutoSize = True Me.label2.Location = New System.Drawing.Point(12, 470) Me.label2.Name = "label2" Me.label2.Size = New System.Drawing.Size(87, 13) Me.label2.TabIndex = 5 Me.label2.Text = "Found barcodes:" ' ' openFileDialog ' Me.openFileDialog.Filter = "Image and PDF files|*.bmp;*.gif;*.tif;*.tiff;*.png;*.jpg;*.jpeg;*.pdf|All files|*" & ".*" ' ' checkBoxAll1D ' Me.checkBoxAll1D.AutoSize = True Me.checkBoxAll1D.Checked = True Me.checkBoxAll1D.CheckState = System.Windows.Forms.CheckState.Checked Me.checkBoxAll1D.Location = New System.Drawing.Point(12, 51) Me.checkBoxAll1D.Name = "checkBoxAll1D" Me.checkBoxAll1D.Size = New System.Drawing.Size(359, 17) Me.checkBoxAll1D.TabIndex = 1 Me.checkBoxAll1D.Text = "One-dimensional (linear) barcodes (Code39, Code128, GS1, EAN, etc.)" Me.checkBoxAll1D.UseVisualStyleBackColor = True ' ' checkBoxAll2D ' Me.checkBoxAll2D.AutoSize = True Me.checkBoxAll2D.Checked = True Me.checkBoxAll2D.CheckState = System.Windows.Forms.CheckState.Checked Me.checkBoxAll2D.Location = New System.Drawing.Point(12, 74) Me.checkBoxAll2D.Name = "checkBoxAll2D" Me.checkBoxAll2D.Size = New System.Drawing.Size(363, 17) Me.checkBoxAll2D.TabIndex = 2 Me.checkBoxAll2D.Text = "Two-dimensional barcodes (Aztec, PDF417, QR Code, Datamatrix, etc.)" Me.checkBoxAll2D.UseVisualStyleBackColor = True ' ' buttonSearch ' Me.buttonSearch.Anchor = CType((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.buttonSearch.Font = New System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CByte(204)) Me.buttonSearch.Location = New System.Drawing.Point(742, 51) Me.buttonSearch.Name = "buttonSearch" Me.buttonSearch.Size = New System.Drawing.Size(128, 40) Me.buttonSearch.TabIndex = 3 Me.buttonSearch.Text = "Search Barcodes" Me.buttonSearch.UseVisualStyleBackColor = True AddHandler Me.buttonSearch.Click, New System.EventHandler(AddressOf Me.buttonSearchBarcodes_Click) ' ' panel1 ' Me.panel1.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.panel1.AutoScroll = True Me.panel1.BackColor = System.Drawing.SystemColors.ControlDark Me.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle Me.panel1.Controls.Add(Me.pictureBoxBarcode) Me.panel1.Location = New System.Drawing.Point(12, 97) Me.panel1.Name = "panel1" Me.panel1.Size = New System.Drawing.Size(858, 370) Me.panel1.TabIndex = 9 ' ' Form1 ' Me.AutoScaleDimensions = New System.Drawing.SizeF(6F, 13F) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.ClientSize = New System.Drawing.Size(882, 600) Me.Controls.Add(Me.panel1) Me.Controls.Add(Me.buttonSearch) Me.Controls.Add(Me.checkBoxAll2D) Me.Controls.Add(Me.checkBoxAll1D) Me.Controls.Add(Me.label2) Me.Controls.Add(Me.textBoxResults) Me.Controls.Add(Me.textBoxFileName) Me.Controls.Add(Me.buttonBrowse) Me.Controls.Add(Me.label1) Me.Name = "Form1" Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen Me.Text = "Barcode Reader" DirectCast(Me.pictureBoxBarcode, System.ComponentModel.ISupportInitialize).EndInit() Me.panel1.ResumeLayout(False) Me.panel1.PerformLayout() Me.ResumeLayout(False) Me.PerformLayout() End Sub #End Region Private label1 As System.Windows.Forms.Label Private buttonBrowse As System.Windows.Forms.Button Private pictureBoxBarcode As System.Windows.Forms.PictureBox Private textBoxFileName As System.Windows.Forms.TextBox Private textBoxResults As System.Windows.Forms.TextBox Private label2 As System.Windows.Forms.Label Private openFileDialog As System.Windows.Forms.OpenFileDialog Private checkBoxAll1D As System.Windows.Forms.CheckBox Private checkBoxAll2D As System.Windows.Forms.CheckBox Private buttonSearch As System.Windows.Forms.Button Private panel1 As System.Windows.Forms.Panel End Class

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Form1.vb
      
Imports System.Collections.Generic Imports System.Drawing Imports System.Windows.Forms Imports Bytescout.BarCodeReader Public Partial Class Form1 Inherits Form Public Sub New() InitializeComponent() End Sub Private _fileName As String = "" Private Sub buttonBrowse_Click(sender As Object, e As EventArgs) Dim result As DialogResult = openFileDialog.ShowDialog() If result = DialogResult.OK Then _fileName = openFileDialog.FileName textBoxFileName.Text = _fileName Try Dim bmp As New Bitmap(_fileName) pictureBoxBarcode.Image = bmp Catch generatedExceptionName As Exception pictureBoxBarcode.Image = Nothing End Try End If End Sub Private Sub buttonSearchBarcodes_Click(sender As Object, e As EventArgs) FindBarcodes() End Sub Private Sub FindBarcodes() If String.IsNullOrEmpty(_fileName) Then Return End If Dim reader As New Reader() reader.RegistrationName = "demo" reader.RegistrationKey = "demo" If checkBoxAll1D.Checked Then reader.BarcodeTypesToFind.All1D = True End If If checkBoxAll2D.Checked Then reader.BarcodeTypesToFind.All2D = True End If Cursor = Cursors.WaitCursor ' ----------------------------------------------------------------------- ' NOTE: We can read barcodes from specific page to increase performance . ' For sample please refer to "Decoding barcodes from PDF by pages" program. ' ----------------------------------------------------------------------- Dim foundBarcodes As FoundBarcode() = reader.ReadFrom(_fileName) ResetCursor() Dim data As New List(Of String)() If foundBarcodes.Length = 0 Then data.Add("No barcodes found") Else For Each barcode As FoundBarcode In foundBarcodes data.Add(String.Format("Type ""{0}"" and value ""{1}""", barcode.Type, barcode.Value)) Next End If ' Cleanup reader.Dispose() textBoxResults.Lines = data.ToArray() End Sub End Class

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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

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