Important Update
Coding to generate barcodes and to print with crystal reports with ByteScout BarCode Generator SDK in VB6 would be really easy for developers of any level.
ByteScout SDKs provide helpful functionalities to perform complex tasks such as automated data extraction, merging or splitting PDFs, and editing documents. It is also equipped to help in generating and reading barcodes from PDFs, images, and scanned documents as it has a built-in OCR and image recognition technology.
We are providing you with a VB sample code you can use in your application to save you a considerable amount of time. All you have to do is copy and paste this code into your VB project and run it. It will do the work for you in generating barcodes. You may also obtain this VB code snippet from our GitHub repository.
To get the ByteScout FREE trial version, just go to our website and download it. This version also contains useful programming tutorials and a bunch of source code samples ready to be implemented.
VERSION 5.00
Object = "{C4847593-972C-11D0-9567-00A0C9273C2A}#8.0#0"; "crviewer.dll"
Begin VB.Form Form1
Caption = "Barcode Print Preview"
ClientHeight = 8865
ClientLeft = 120
ClientTop = 450
ClientWidth = 13890
LinkTopic = "Form1"
ScaleHeight = 8865
ScaleWidth = 13890
StartUpPosition = 3 'Windows Default
WindowState = 2 'Maximized
Begin VB.PictureBox Picture1
AutoSize = -1 'True
Height = 1695
Left = 2640
ScaleHeight = 1635
ScaleWidth = 11835
TabIndex = 2
Top = 7440
Visible = 0 'False
Width = 11895
End
Begin CRVIEWERLibCtl.CRViewer CRViewer1
Height = 6495
Left = 2520
TabIndex = 1
Top = 120
Width = 15975
DisplayGroupTree= -1 'True
DisplayToolbar = -1 'True
EnableGroupTree = -1 'True
EnableNavigationControls= -1 'True
EnableStopButton= -1 'True
EnablePrintButton= -1 'True
EnableZoomControl= -1 'True
EnableCloseButton= -1 'True
EnableProgressControl= -1 'True
EnableSearchControl= -1 'True
EnableRefreshButton= -1 'True
EnableDrillDown = -1 'True
EnableAnimationControl= -1 'True
EnableSelectExpertButton= 0 'False
EnableToolbar = -1 'True
DisplayBorder = -1 'True
DisplayTabs = -1 'True
DisplayBackgroundEdge= -1 'True
SelectionFormula= ""
EnablePopupMenu = -1 'True
EnableExportButton= 0 'False
EnableSearchExpertButton= 0 'False
EnableHelpButton= 0 'False
End
Begin VB.CommandButton Command2
Caption = "Generate Crystal Report"
BeginProperty Font
Name = "Times New Roman"
Size = 14.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1095
Left = 120
TabIndex = 0
Top = 7080
Visible = 0 'False
Width = 1695
End
Begin VB.Image Image1
Height = 1695
Left = 2640
Stretch = -1 'True
Top = 9240
Visible = 0 'False
Width = 11895
End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'DEFINITcION:
'need to write the simple app showing insertion of generated images(will provide the dll that
'generates images in png, bmp, gif formats) into Crystal Report 8.5 in Visual Basic 6
'Add REFRENCE Microsoft Scripting Runtime
Public cn As ADODB.Connection
Public crx As New CRAXDRT.Application
Dim rpt As CRAXDRT.Report 'Variable for Report
Dim db As CRAXDRT.Database 'variable for Report Database
Dim crTab As CRAXDRT.DatabaseTable 'Variable for Report Database Table
Dim rs As New ADODB.Recordset
Dim WithEvents sect As CRAXDRT.Section 'Variable for Sector of Report
Attribute sect.VB_VarHelpID = -1
Dim pic1 As String 'Stores Image path
Dim h, w As Double 'Stores Height and width
Private Sub Command6_Click()
Unload Me
End Sub
Private Sub sect_Format(ByVal pFormattingInfo As Object)
Dim fso As New FileSystemObject 'Variable for Files,Folders add,edit,delete etc
Dim bmp As StdPicture 'store .bmp file's memory or buffer
Dim gif As StdPicture 'store .gif file's memory or buffer
Dim ext As String 'store Extension of image file
pic1 = sect.ReportObjects.Item("Field2").Value 'gets and stores image path
'check for image available or not
If fso.FileExists(pic1) = False Then
MsgBox "File not found"
Exit Sub
End If
ext = Right(pic1, 3) 'gets and stores extension of image
'checks for particular extension and loads it to picturebox control
If ext = "png" Then
PngPictureLoad pic1, Picture1, True
ElseIf ext = "bmp" Then
Picture1.Picture = LoadPicture(pic1)
ElseIf ext = "gif" Then
Image1.Picture = LoadPicture(pic1)
Picture1.Picture = LoadPicture(pic1)
End If
If ext = "png" Then
PngPictureLoad pic1, Picture1, True 'It loads file to Picture box control, the method "PngPictureLoad" is defined in Module "Module1"
With sect.ReportObjects 'it refers to section of Report
pic1 = .Item("Field2").Value 'It gets and stores Image path
Call pic_size 'It will get the size of image the method 'pic_size' is defined bellow
'Set .Item(3).FormattedPicture = Image1.Picture 'It will load Image or picture to Crystal Report
Set .Item(3).FormattedPicture = Picture1.Picture 'It will load Image or picture to Crystal Report
.Item(3).Width = w 'It will set width of Image
.Item(3).Height = h 'It will set height of Image
End With
ElseIf ext = "bmp" Then
Image1.Picture = LoadPicture(pic1) 'It loads file to Picture box control
With sect.ReportObjects 'it refers to section of Report
pic1 = .Item("Field2").Value 'It gets and stores Image path
Call pic_size 'It will get the size of image the method 'pic_size' is defined bellow
Set bmp = LoadPicture(.Item("Field2").Value) 'It will load Image or picture to bmp variable
Set .Item(3).FormattedPicture = bmp 'It will load Image or picture to Crystal Report
.Item(3).Width = w 'It will set width of Image
.Item(3).Height = h 'It will set height of Image
End With
ElseIf ext = "gif" Then
Image1.Picture = LoadPicture(pic1) 'It loads file to Picture box control
With sect.ReportObjects 'it refers to section of Report
pic1 = .Item("Field2").Value 'It gets and stores Image path
Call pic_size 'It will get the size of image the method 'pic_size' is defined bellow
Set gif = LoadPicture(.Item("Field2").Value) 'It will load Image or picture to gif variable
Set .Item(3).FormattedPicture = gif 'It will load Image or picture to Crystal Report
.Item(3).Width = w 'It will set width of Image
.Item(3).Height = h 'It will set height of Image
End With
End If
End Sub
Public Sub Command2_Click()
Call conn 'Calls Conn method to connect with Database which is defined below
Dim rpt_path, pwd As String 'rpt_path stores Report Path and pwd stores Password of Database
pwd = Chr(10) & "crystal_report" 'It gets and stores Password of Database
rpt_path = App.path & "\Report2.rpt" 'It gets and stores Report Path
Set appl = New CRAXDRT.Application 'sets Crystal Report as Application to "appl" variable
Set rpt = appl.OpenReport(rpt_path) 'sets Report path to rpt variable
'below loop tells Crystal Report to follow Database
For Each crTab In rpt.Database.Tables
crTab.Location = App.path & "\temp.mdb"
crTab.SetSessionInfo "", pwd
Next
Set sect = Nothing 'sect variable gets blank
Set sect = rpt.Sections("Section5") 'sect variable gets Section of CR
rpt.DisplayProgressDialog = True 'It shows Progressbar to display CR
If rs.State = 1 Then rs.Close 'Checks if rs is open then it will close 'RS->Recordset of Database
rs.Open "SELECT * FROM test", cn, 1, 1 'rs open with new query
rpt.Database.SetDataSource rs, 3, 1 'sets rs to Crystal Report
'Check if rs has no record then it will display massege that no files to load
If rs.RecordCount <= 0 Then
MsgBox "NO Files To Load", vbInformation
Exit Sub
End If
CRViewer1.ReportSource = rpt 'CRViewer control gets which report to display
CRViewer1.ViewReport 'It will Display Report
CRViewer1.Zoom 1 'Crystal Report Zoom 100%
pic1 = rs.Fields(1).Value 'gets and stores Image path
End Sub
'Method to create connection with Database
Public Sub conn()
On Error GoTo checkErr
Dim path As String
path = App.path & "\temp.mdb"
Set cn = New ADODB.Connection
cn.Provider = "Microsoft.Jet.OLEDB.4.0"
cn.ConnectionString = path
cn.Properties("Jet OLEDB:Database Password") = "crystal_report"
cn.Open
OpenDatabase = True
Exit Sub
checkErr:
MsgBox Err.Description, vbExclamation, Err.Number
End Sub
Private Sub Form_Load()
Call conn 'It will call Conn method to establish connection with Database
End Sub
Private Sub Form_Resize()
'setting Crystal Report to Form
CRViewer1.Top = 0
CRViewer1.Left = 0
CRViewer1.Height = ScaleHeight
CRViewer1.Width = ScaleWidth
End Sub
Private Sub Form_Unload(Cancel As Integer)
If cn.State = 1 Then cn.Close 'close connection
If rs.State = 1 Then rs.Close 'close recordset
End Sub
'This method loads image to picturebox control and then sets height and width of image
Private Sub pic_size()
Dim ext As String
ext = Right(pic1, 3)
If ext = "png" Then
'PngImageLoad pic1, Image1
PngPictureLoad pic1, Picture1, False
ElseIf ext = "bmp" Then
'Image1.Picture = LoadPicture(pic1)
Picture1.Picture = LoadPicture(pic1)
ElseIf ext = "gif" Then
'Image1.Picture = LoadPicture(pic1)
Picture1.Picture = LoadPicture(pic1)
End If
'h = Image1.Height
'w = Image1.Width
h = Picture1.Height
w = Picture1.Width
'MsgBox "Height : " & h & vbCrLf & "Width : " & w
End Sub
Form2.frm
VERSION 5.00
Begin VB.Form Form2
Caption = "Barcode Printing Application"
ClientHeight = 1905
ClientLeft = 120
ClientTop = 450
ClientWidth = 4185
ControlBox = 0 'False
LinkTopic = "Form2"
ScaleHeight = 1905
ScaleWidth = 4185
StartUpPosition = 3 'Windows Default
Begin VB.CommandButton Command4
Cancel = -1 'True
Caption = "E&XIT"
BeginProperty Font
Name = "Times New Roman"
Size = 14.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1455
Left = 2880
TabIndex = 1
Top = 240
Width = 975
End
Begin VB.CommandButton cmd_gen_cr_with_barcodes
Caption = "Generate Crystal Report with Barcodes"
BeginProperty Font
Name = "Times New Roman"
Size = 14.25
Charset = 0
Weight = 700
Underline = 0 'False
Italic = 0 'False
Strikethrough = 0 'False
EndProperty
Height = 1455
Left = 120
TabIndex = 0
Top = 240
Width = 2415
End
End
Attribute VB_Name = "Form2"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'Variable Declaration
'Dim pic1 As String 'Stores Image path
'Dim h, w As Double 'Stores Height and width of Image
'Dim bmp_path As String
'Dim png_path As String
Private Sub cmd_gen_cr_with_barcodes_Click()
Form1.Command2_Click
Form1.Show
End Sub
Private Sub Command4_Click()
Unload Me
End Sub
Private Sub Form_Load()
Call conn 'It will call Conn method to establish connection with Database
End Sub
'Method to insert path of images to database
Private Sub insert_into_DB()
Dim query As String
'Delete old Data clears Database
If rs.State = 1 Then rs.Close
query = "delete * from test"
rs.Open query, cn, 1, 1
'Insert Data to Database
num1 = 1
If rs.State = 1 Then rs.Close
query = "insert into test values(" & num1 & ",'" & bmp_path & "')"
rs.Open query, cn, 1, 1
If rs.State = 1 Then rs.Close
query = "insert into test values(" & num1 & ",'" & png_path & "')"
rs.Open query, cn, 1, 1
End Sub
'Method to create connection with Database
Public Sub conn()
On Error GoTo checkErr 'Error Handler
Dim path As String
path = App.path & "\temp.mdb"
Set cn = New ADODB.Connection
cn.Provider = "Microsoft.Jet.OLEDB.4.0"
cn.ConnectionString = path
cn.Properties("Jet OLEDB:Database Password") = "crystal_report"
cn.Open
OpenDatabase = True
Exit Sub
checkErr:
MsgBox Err.Description, vbExclamation, Err.Number
End Sub
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