ByteScout Barcode Reader SDK - VB.NET - GUI Example For Barcode Reading - ByteScout

ByteScout Barcode Reader SDK – VB.NET – GUI Example For Barcode Reading

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GUI example for barcode reading in VB.NET using ByteScout BarCode Reader SDK

How To: tutorial on GUI example for barcode reading in VB.NET

Today you are going to learn how to GUI example for barcode reading in VB.NET. ByteScout BarCode Reader SDK was made to help with GUI example for barcode reading in VB.NET. ByteScout BarCode Reader SDK is the SDK for barcode decoding. Can read all popular types from Code 128, GS1, UPC and Code 39 to QR Code, Datamatrix, PDF417. Images, pdf, TIF images and live web camera are supported as input. Designed to handle documents with noise and defects. Includes optional splitter and merger for pdf and tiff based on barcodes. Batch mode is optimized for high performance with multiple threads. Decoded values can be exported to XML, JSON, CSV or into custom data format.

VB.NET, code samples for VB.NET, developers help to speed up the application development and writing a code when using ByteScout BarCode Reader SDK. To do GUI example for barcode reading in your VB.NET project or application you may simply copy & paste the code and then run your app! Code testing will allow the function to be tested and work properly with your data.

Our website provides free trial version of ByteScout BarCode Reader SDK. It comes along with all these source code samples with the goal to help you with your VB.NET application implementation.

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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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