Introduction
I created this with Visual Studio 2017. I used the information off Wiki to make a VB Barcode generator. It seems to work well. I don't know how to print the contents of the picturebox. So this means the print button doesn't work. Short of that, i have tested it and it does work well. This code can easily be modified for 128A. I'm an amateur so needless to say, my code is sloppy. Feel free to give me any pointers.
Background
I used the "Bar code widths" section of "Code 128" of wiki to generate this. I cheated a little and copied the table into Excel, then created a formula that would write my code for me. It didn't take long to do. I just had to use the "Char(34)" a lot in my formulas.
Using the Code
There are three main functions that really do all the work:
GenerateBarcode(Input as String)GenerateCheckSum(Dig as Integer)GenerateBINARY(Input As String)
First, turn your string into binary.
Note: "GenerateBINARY(Input As String)" uses "GenerateCheckSum(Dig as Integer)" in the function.
Second, turn the BINARY of the first step into Barcode 128B.
// GenerateBarcode(BINARY) ' "BINARY" is the result of the first step
Source Code
Imports System
Imports System.IO
Imports System.Drawing
Imports System.Drawing.Printing
Imports System.Windows.Forms
Public Class Form1
Dim BINARY As String
Dim CheckSumVal As Integer
Dim BINVAL As String
Dim BINARYLength As Int32
Friend WithEvents printDoc As New PrintDocument()
Dim bmpBarcode As Bitmap
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
picBarcode.BackColor = Color.White
Dim FontSize As Integer = 0
Dim LengthOfBarcode As Integer = 10
FontSize = 1
Do Until FontSize = 72
cboSize.Items.Add(FontSize)
FontSize = FontSize + 1
Loop
Do Until LengthOfBarcode = 110
cboLength.Items.Add(LengthOfBarcode)
LengthOfBarcode = LengthOfBarcode + 10
Loop
cboSize.SelectedIndex = 0
cboLength.SelectedIndex = 9
End Sub
Private Sub btnGenerate_Click(sender As Object, e As EventArgs) Handles btnGenerate.Click
GenerateBINARY(txtInput.Text)
GenerateBarcode(BINARY)
End Sub
Private Sub GenerateBINARY(Input As String)
BINARY = 0
Dim CharVal As Integer = 0
Dim CharCount As Integer = 0
Dim GrandCharCount As Integer = 0
Dim CheckSum As Integer = 0
For Each Item As Char In Input
Select Case Item
Case = " "
BINARY = BINARY & "11011001100"
CharVal = 0
Case = "!"
BINARY = BINARY & "11001101100"
CharVal = 1
Case = """"
BINARY = BINARY & "11001100110"
CharVal = 2
Case = "#"
BINARY = BINARY & "10010011000"
CharVal = 3
Case = "$"
BINARY = BINARY & "10010001100"
CharVal = 4
Case "%"
BINARY = BINARY & "10001001100"
CharVal = 5
Case "&"
BINARY = BINARY & "10011001000"
CharVal = 6
Case "'"
BINARY = BINARY & "10011000100"
CharVal = 7
Case "("
BINARY = BINARY & "10001100100"
CharVal = 8
Case ")"
BINARY = BINARY & "11001001000"
CharVal = 9
Case "*"
BINARY = BINARY & "11001000100"
CharVal = 10
Case "+"
BINARY = BINARY & "11000100100"
CharVal = 11
Case ","
BINARY = BINARY & "10110011100"
CharVal = 12
Case "-"
BINARY = BINARY & "10011011100"
CharVal = 13
Case "."
BINARY = BINARY & "10011001110"
CharVal = 14
Case "/"
BINARY = BINARY & "10111001100"
CharVal = 15
Case "0"
BINARY = BINARY & "10011101100"
CharVal = 16
Case "1"
BINARY = BINARY & "10011100110"
CharVal = 17
Case "2"
BINARY = BINARY & "11001110010"
CharVal = 18
Case "3"
BINARY = BINARY & "11001011100"
CharVal = 19
Case "4"
BINARY = BINARY & "11001001110"
CharVal = 20
Case "5"
BINARY = BINARY & "11011100100"
CharVal = 21
Case "6"
BINARY = BINARY & "11001110100"
CharVal = 22
Case "7"
BINARY = BINARY & "11101101110"
CharVal = 23
Case "8"
BINARY = BINARY & "11101001100"
CharVal = 24
Case "9"
BINARY = BINARY & "11100101100"
CharVal = 25
Case ":"
BINARY = BINARY & "11100100110"
CharVal = 26
Case " ;"
BINARY = BINARY & "11101100100"
CharVal = 27
Case "<"
BINARY = BINARY & "11100110100"
CharVal = 28
Case "="
BINARY = BINARY & "11100110010"
CharVal = 29
Case ">"
BINARY = BINARY & "11011011000"
CharVal = 30
Case " ?"
BINARY = BINARY & "11011000110"
CharVal = 31
Case "@"
BINARY = BINARY & "11000110110"
CharVal = 32
Case "A"
BINARY = BINARY & "10100011000"
CharVal = 33
Case "B"
BINARY = BINARY & "10001011000"
CharVal = 34
Case "C"
BINARY = BINARY & "10001000110"
CharVal = 35
Case "D"
BINARY = BINARY & "10110001000"
CharVal = 36
Case "E"
BINARY = BINARY & "10001101000"
CharVal = 37
Case "F"
BINARY = BINARY & "10001100010"
CharVal = 38
Case "G"
BINARY = BINARY & "11010001000"
CharVal = 39
Case "H"
BINARY = BINARY & "11000101000"
CharVal = 40
Case "I"
BINARY = BINARY & "11000100010"
CharVal = 41
Case "J"
BINARY = BINARY & "10110111000"
CharVal = 42
Case "K"
BINARY = BINARY & "10110001110"
CharVal = 43
Case "L"
BINARY = BINARY & "10001101110"
CharVal = 44
Case "M"
BINARY = BINARY & "10111011000"
CharVal = 45
Case "N"
BINARY = BINARY & "10111000110"
CharVal = 46
Case "O"
BINARY = BINARY & "10001110110"
CharVal = 47
Case "P"
BINARY = BINARY & "11101110110"
CharVal = 48
Case "Q"
BINARY = BINARY & "11010001110"
CharVal = 49
Case "R"
BINARY = BINARY & "11000101110"
CharVal = 50
Case "S"
BINARY = BINARY & "11011101000"
CharVal = 51
Case "T"
BINARY = BINARY & "11011100010"
CharVal = 52
Case "U"
BINARY = BINARY & "11011101110"
CharVal = 53
Case "V"
BINARY = BINARY & "11101011000"
CharVal = 54
Case "W"
BINARY = BINARY & "11101000110"
CharVal = 55
Case "X"
BINARY = BINARY & "11100010110"
CharVal = 56
Case "Y"
BINARY = BINARY & "11101101000"
CharVal = 57
Case "Z"
BINARY = BINARY & "11101100010"
CharVal = 58
Case "["
BINARY = BINARY & "11100011010"
CharVal = 59
Case "\"
BINARY = BINARY & "11101111010"
CharVal = 60
Case "]"
BINARY = BINARY & "11001000010"
CharVal = 61
Case "^"
BINARY = BINARY & "11110001010"
CharVal = 62
Case "_"
BINARY = BINARY & "10100110000"
CharVal = 63
Case "`"
BINARY = BINARY & "10100001100"
CharVal = 64
Case "a"
BINARY = BINARY & "10010110000"
CharVal = 65
Case "b"
BINARY = BINARY & "10010000110"
CharVal = 66
Case "c"
BINARY = BINARY & "10000101100"
CharVal = 67
Case "d"
BINARY = BINARY & "10000100110"
CharVal = 68
Case "e"
BINARY = BINARY & "10110010000"
CharVal = 69
Case "f"
BINARY = BINARY & "10110000100"
CharVal = 70
Case "g"
BINARY = BINARY & "10011010000"
CharVal = 71
Case "h"
BINARY = BINARY & "10011000010"
CharVal = 72
Case "i"
BINARY = BINARY & "10000110100"
CharVal = 73
Case "j"
BINARY = BINARY & "10000110010"
CharVal = 74
Case "k"
BINARY = BINARY & "11000010010"
CharVal = 75
Case "l"
BINARY = BINARY & "11001010000"
CharVal = 76
Case "m"
BINARY = BINARY & "11110111010"
CharVal = 77
Case "n"
BINARY = BINARY & "11000010100"
CharVal = 78
Case "o"
BINARY = BINARY & "10001111010"
CharVal = 79
Case "p"
BINARY = BINARY & "10100111100"
CharVal = 80
Case "q"
BINARY = BINARY & "10010111100"
CharVal = 81
Case "r"
BINARY = BINARY & "10010011110"
CharVal = 82
Case "s"
BINARY = BINARY & "10111100100"
CharVal = 83
Case "t"
BINARY = BINARY & "10011110100"
CharVal = 84
Case "u"
BINARY = BINARY & "10011110010"
CharVal = 85
Case "v"
BINARY = BINARY & "11110100100"
CharVal = 86
Case "w"
BINARY = BINARY & "11110010100"
CharVal = 87
Case "x"
BINARY = BINARY & "11110010010"
CharVal = 88
Case "y"
BINARY = BINARY & "11011011110"
CharVal = 89
Case "z"
BINARY = BINARY & "11011110110"
CharVal = 90
Case "{"
BINARY = BINARY & "11110110110"
CharVal = 91
Case "|"
BINARY = BINARY & "10101111000"
CharVal = 92
Case "}"
BINARY = BINARY & "10100011110"
CharVal = 93
Case "~"
BINARY = BINARY & "10001011110"
CharVal = 94
End Select
CharCount = CharCount + 1
GrandCharCount = CharVal * CharCount
CheckSum = CheckSum + GrandCharCount
Next
CheckSum = CheckSum + 104
CheckSumVal = CheckSum Mod 103
BINVAL = 0
GenerateCheckSum(CheckSumVal)
BINARY = "00011010010000" & BINARY
BINARY = BINARY & BINVAL & "1100011101011000"
BINARYLength = 0
For Each dig As String In BINARY
CharCount = CharCount + 1
Next
End Sub
Private Sub GenerateCheckSum(Dig As Integer)
Select Case Dig
Case "0"
BINVAL = "11011001100"
Case "1"
BINVAL = "11001101100"
Case "2"
BINVAL = "11001100110"
Case "3"
BINVAL = "10010011000"
Case "4"
BINVAL = "10010001100"
Case "5"
BINVAL = "10001001100"
Case "6"
BINVAL = "10011001000"
Case "7"
BINVAL = "10011000100"
Case "8"
BINVAL = "10001100100"
Case "9"
BINVAL = "11001001000"
Case "10"
BINVAL = "11001000100"
Case "11"
BINVAL = "11000100100"
Case "12"
BINVAL = "10110011100"
Case "13"
BINVAL = "10011011100"
Case "14"
BINVAL = "10011001110"
Case "15"
BINVAL = "10111001100"
Case "16"
BINVAL = "10011101100"
Case "17"
BINVAL = "10011100110"
Case "18"
BINVAL = "11001110010"
Case "19"
BINVAL = "11001011100"
Case "20"
BINVAL = "11001001110"
Case "21"
BINVAL = "11011100100"
Case "22"
BINVAL = "11001110100"
Case "23"
BINVAL = "11101101110"
Case "24"
BINVAL = "11101001100"
Case "25"
BINVAL = "11100101100"
Case "26"
BINVAL = "11100100110"
Case "27"
BINVAL = "11101100100"
Case "28"
BINVAL = "11100110100"
Case "29"
BINVAL = "11100110010"
Case "30"
BINVAL = "11011011000"
Case "31"
BINVAL = "11011000110"
Case "32"
BINVAL = "11000110110"
Case "33"
BINVAL = "10100011000"
Case "34"
BINVAL = "10001011000"
Case "35"
BINVAL = "10001000110"
Case "36"
BINVAL = "10110001000"
Case "37"
BINVAL = "10001101000"
Case "38"
BINVAL = "10001100010"
Case "39"
BINVAL = "11010001000"
Case "40"
BINVAL = "11000101000"
Case "41"
BINVAL = "11000100010"
Case "42"
BINVAL = "10110111000"
Case "43"
BINVAL = "10110001110"
Case "44"
BINVAL = "10001101110"
Case "45"
BINVAL = "10111011000"
Case "46"
BINVAL = "10111000110"
Case "47"
BINVAL = "10001110110"
Case "48"
BINVAL = "11101110110"
Case "49"
BINVAL = "11010001110"
Case "50"
BINVAL = "11000101110"
Case "51"
BINVAL = "11011101000"
Case "52"
BINVAL = "11011100010"
Case "53"
BINVAL = "11011101110"
Case "54"
BINVAL = "11101011000"
Case "55"
BINVAL = "11101000110"
Case "56"
BINVAL = "11100010110"
Case "57"
BINVAL = "11101101000"
Case "58"
BINVAL = "11101100010"
Case "59"
BINVAL = "11100011010"
Case "60"
BINVAL = "11101111010"
Case "61"
BINVAL = "11001000010"
Case "62"
BINVAL = "11110001010"
Case "63"
BINVAL = "10100110000"
Case "64"
BINVAL = "10100001100"
Case "65"
BINVAL = "10010110000"
Case "66"
BINVAL = "10010000110"
Case "67"
BINVAL = "10000101100"
Case "68"
BINVAL = "10000100110"
Case "69"
BINVAL = "10110010000"
Case "70"
BINVAL = "10110000100"
Case "71"
BINVAL = "10011010000"
Case "72"
BINVAL = "10011000010"
Case "73"
BINVAL = "10000110100"
Case "74"
BINVAL = "10000110010"
Case "75"
BINVAL = "11000010010"
Case "76"
BINVAL = "11001010000"
Case "77"
BINVAL = "11110111010"
Case "78"
BINVAL = "11000010100"
Case "79"
BINVAL = "10001111010"
Case "80"
BINVAL = "10100111100"
Case "81"
BINVAL = "10010111100"
Case "82"
BINVAL = "10010011110"
Case "83"
BINVAL = "10111100100"
Case "84"
BINVAL = "10011110100"
Case "85"
BINVAL = "10011110010"
Case "86"
BINVAL = "11110100100"
Case "87"
BINVAL = "11110010100"
Case "88"
BINVAL = "11110010010"
Case "89"
BINVAL = "11011011110"
Case "90"
BINVAL = "11011110110"
Case "91"
BINVAL = "11110110110"
Case "92"
BINVAL = "10101111000"
Case "93"
BINVAL = "10100011110"
Case "94"
BINVAL = "10001011110"
End Select
End Sub
Private Sub GenerateBarcode(Input As String)
Dim num As Integer = 0
For Each one As String In Input
num = num + cboSize.Text
Next
Dim rec As New Rectangle(1, 1, num, cboLength.Text)
Dim img As New Bitmap(num, Convert.ToInt32(cboLength.Text))
Dim count As Integer = 0
Dim length As Integer = 0
Dim aBlackPen As New Pen(Color.Black)
Dim aWhitePen As New Pen(Color.White)
aBlackPen.Width = cboSize.Text
aWhitePen.Width = cboSize.Text
length = length + cboLength.Text
For Each item As String In Input
count = count + cboSize.Text
If item = 1 Then
picBarcode.CreateGraphics.DrawLine(aBlackPen, count, 1, count, length)
Else
picBarcode.CreateGraphics.DrawLine(aWhitePen, count, 1, count, length)
End If
Next
picBarcode.DrawToBitmap(img, rec)
bmpBarcode = img
End Sub
Private Sub btnClear_Click(sender As Object, e As EventArgs) Handles btnClear.Click
picBarcode.Image = Nothing
End Sub
Private Sub PrintImage(ByVal sender As Object, _
ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles printDoc.PrintPage
e.Graphics.DrawImage(bmpBarcode, e.MarginBounds.Left, e.MarginBounds.Top)
End Sub
Private Sub btnPrint_Click(sender As Object, e As EventArgs) Handles btnPrint.Click
printDoc.Print()
End Sub
End Class
