Script Code : Buat Form Kartu Kredit

Di sini saya akan memberikan script coding VB (Visual Basic). Anda pasti sudah tahu apa VB? kalau belum tahu VB (Visual Basic) adalah bahasa pemprograman yang menawarkan Integrated Development Environment (IDE) visual untuk membuat program perangkat lunak berbasis sistem operasi Microsoft Windows dengan menggunakan model pemprograman (COM), Visual Basic merupakan turunan bahasa pemprograman BASIC dan menawarkan pengembangan perangkat lunak komputer berbasis grafik dengan cepat. Panjang bener, intinya VB adalah bahasa pemprograman miliknya Microsoft, baiklah saya mulai :

Keterangan Gambar.

Script Code :

Option Explicit
'Dim vbIndex untuk tombol pilihan
Dim vbIndex As Integer
-----------------------------------------------------------------------------------------
Private Sub cmdCheck_Click()
Dim vbNumber As String
Dim vbInstr As Integer
Dim vbTemp As String
Dim vbNumber2 As String
'Jika kotak teks kosong dan akan keluar pesan
If IsNull(txt_Number) Then
MsgBox "Tolong di Masukkan Nomor.", vbExclamation + vbOKOnly, "Masukkan Nomor"
Exit Sub
Else 'Untuk memverifikasi variabel String
vbNumber = txt_Number
End If
'Perintah untuk menyisipkan gambar
Picture1.Visible = True
'vbInstr akan memeriksa dalam String dan mengurai keluar
vbInstr = 1
'Menginisialisasi variabel String kosong
vbTemp = ""
While vbInstr > 0 'Untuk menguraikan String
vbInstr = InStr(vbNumber, "-")
If vbInstr > 0 Then
'Akhir String
vbNumber2 = Left$(vbNumber, vbInstr - 1)
Else ' String vbNumber2 akan menguraikan variabel String
vbNumber2 = vbNumber
End If
'Menetapkan String
vbNumber = Right$(vbNumber, Len(vbNumber) - vbInstr)
vbTemp = vbTemp + vbNumber2
Wend
'vbTemp untuk menetapkan panjang
If Len(vbTemp) > 1 Then
vbNumber = vbTemp
End If
'Memuat dan menampilkan gambar yang sesuai
Select Case Left$(vbNumber, 1)
Case "4" ' Visa
Picture1.Picture = LoadPicture(App.Path + "\visa.gif")
Case "5" 'Mastercard
Picture1.Picture = LoadPicture(App.Path + "\mcard.gif")
Case "6" 'Discover
Picture1.Picture = LoadPicture(App.Path + "\discover.gif")
Case "3" ' American Express
Picture1.Picture = LoadPicture(App.Path + "\amex.gif")
Case Else 'None
Picture1.Visible = False
End Select
txt_Verify.SetFocus
'Memverifikasi nomor
If CheckCard(vbNumber) = False Then
txt_Verify.Text = "Nomor salah."
Else
txt_Verify.Text = "Nomor benar."
End If
End Sub
-----------------------------------------------------------------------------------------
Function CheckCard(CCNumber As String) As Boolean
Dim vbCounter As Integer
Dim vbInt As Integer
Dim vbAnswer As Integer
vbCounter = 1
vbInt = 0
'Semua angka akan dihitung
While vbCounter <= Len(CCNumber)
'Melakukan cek LUHN
vbInt = Val(Mid$(CCNumber, vbCounter, 1))
'Memeriksa posisi yang ganjil
If Not (vbCounter Mod 2) Then
vbInt = vbInt * 2
If vbInt > 9 Then vbInt = vbInt - 9
End If
vbAnswer = vbAnswer + vbInt
vbCounter = vbCounter + 1
Wend
vbAnswer = vbAnswer Mod 10 'Dibagi 10
If vbAnswer = 0 Then ' Kartu benar
CheckCard = True
Else
CheckCard = False ' Kartu salah
End If
End Function
-----------------------------------------------------------------------------------------
Private Sub cmdGenerate_Click()
Dim vbCounter As Integer
Dim vbInt As Integer
Dim vbAnswer As String
Dim vbStart As String
Dim vbFirst(11) As String
Dim vbBool As Boolean
Dim vbSet As Integer
Dim vbLength As Integer
vbBool = False
While vbBool = False
Randomize
vbInt = 0
Picture1.Visible = True
Select Case vbIndex
Case 1 'Konfigurasi Visa banks
vbFirst(1) = "4032"
vbFirst(2) = "4128"
vbFirst(3) = "4250"
vbFirst(4) = "4312"
vbFirst(5) = "4421"
vbFirst(6) = "4539"
vbFirst(7) = "4556"
vbFirst(8) = "4673"
vbFirst(9) = "4722"
vbFirst(10) = "4800"
vbFirst(11) = "4833"
vbSet = Int(11 * Rnd) + 1
vbStart = vbFirst(vbSet)
vbLength = 16
Picture1.Picture = LoadPicture(App.Path + "\(punya-rizal.blogspot.com)visa.gif")
Case 2 'Mastercard
vbFirst(1) = "510813" ' Bank
vbSet = 1
vbStart = vbFirst(vbSet)
vbLength = 16
Picture1.Picture = LoadPicture(App.Path + "\(punya-rizal.blogspot.com)mcard.gif")
Case 3 'American Express Banks
vbFirst(1) = "372034"
vbFirst(2) = "372407"
vbFirst(3) = "372861"
vbFirst(4) = "373227"
vbSet = Int(4 * Rnd) + 1
vbStart = vbFirst(vbSet)
vbLength = 15
Picture1.Picture = LoadPicture(App.Path + "\(punya-rizal.blogspot.com)amex.gif")
Case 4 'Discover
vbFirst(1) = "601100" 'Bank
vbSet = 1
vbStart = vbFirst(vbSet)
vbLength = 16
Picture1.Picture = LoadPicture(App.Path + "\(punya-rizal.blogspot.com)discover.gif")
End Select
While Len(vbStart) < vbLength
vbInt = Int((9 * Rnd) + 1)
If Not (vbCounter Mod 2) Then
vbInt = vbInt * 2
If vbInt > 9 Then
vbInt = vbInt - 9
End If
ElseIf (vbCounter Mod 2) Then
vbInt = vbInt * 2
If vbInt > 9 Then
vbInt = vbInt - 9
End If
End If
vbStart = vbStart + LTrim$(Str$(vbInt))
vbCounter = vbCounter + 1
Wend
If CheckCard(vbStart) = False Then
vbInt = 0
txt_Verify.SetFocus
txt_Verify.Text = "Nomor salah."
Else
vbBool = True
txt_Number.SetFocus
txt_Number.Text = vbStart
txt_Verify.SetFocus
txt_Verify.Text = "Nomor benar."
End If
Wend
End Sub
-----------------------------------------------------------------------------------------
Private Sub Form_Load()
'Mengisialisasi Index
vbIndex = 1
End Sub
-----------------------------------------------------------------------------------------
'Menetapkan index untuk opsi pilihan visa, mastercard, american express atau discover
Private Sub opt_Click(Index As Integer)
vbIndex = Index
End Sub

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