Untuk Code Log in
Public Class Form2
    Private Sub BtnLogin_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles BtnLogin.Click
        If
User.Text = "" Or Pass.Text = ""
Then
            MsgBox("Data
Tidak Ada", MsgBoxStyle.Critical, Me)
        ElseIf
User.Text = "Rizki" And Pass.Text = "77"
Then
            Form3.Show()
        ElseIf
User.Text <> "Rizki" Or Pass.Text <> "77"
Then
            MsgBox("Log
in Salah", MsgBoxStyle.Critical)
        End If
        Teks.Visible = True
    End Sub
    Sub tk()
        Teks.Text = "User
: Rizki" & vbCrLf & _
        "Pass  : 77 "
    End Sub
    Private Sub Form2_Load(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
        tk()
    End Sub
    Private Sub Button1_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
        Teks.Visible = True
    End Sub
End Class
Untuk Code Menu
Public Class Form3
    Private Sub DataPDAMToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As
System.EventArgs) Handles
DataPDAMToolStripMenuItem.Click
        Form1.Show()
    End Sub
    Private Sub Form3_FormClosing(ByVal
sender As Object,
ByVal e As
System.Windows.Forms.FormClosingEventArgs) Handles
Me.FormClosing
        e.Cancel = True
        If
MsgBox("Anda Yakin Keluar?",
MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
            Me.Hide()
        End If
    End Sub
    Private Sub Form3_Load(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
    End Sub
End Class
Untuk Code Tagihan Pdam
Public Class Form1
    Sub
kodeplg()
        Dim A,
B, C As String
        A =
Microsoft.VisualBasic.Left(Kode_p.Text, 3)
        B =
Microsoft.VisualBasic.Mid(Kode_p.Text, 5, 3)
        C =
Microsoft.VisualBasic.Right(Kode_p.Text, 3)
        No_urut.Text = C
        If A = "TOK" Then
            Type_p.Text = "Toko"
            Beban.Text = 25000
            Harga_M3.Text = 300
        ElseIf
A = "RUM" Then
            Type_p.Text = "Rumah"
            Beban.Text = 15000
            Harga_M3.Text = 100
        ElseIf
A = "SWA" Then
            Type_p.Text = "Swalayan"
            Beban.Text = 10000
            Harga_M3.Text = 200
        ElseIf
A = "PAB" Then
            Type_p.Text = "Pabrik"
            Beban.Text = 250000
            Harga_M3.Text = 500
        End If
        If B = "MED" Then
            Nama_D.Text = "Medan"
        ElseIf
B = "BEL" Then
            Nama_D.Text = "Belawan"
        ElseIf
B = "TEM" Then
            Nama_D.Text = "Aksara"
        ElseIf
B = "MAR" Then
            Nama_D.Text = "Marendal"
        ElseIf
B = "BIN" Then
            Nama_D.Text = "Binjay"
        ElseIf
B = "PAK" Then
            Nama_D.Text = "Lubuk Pakam"
        End If
    End Sub
    Sub
kodeplgCOMBO()
        Dim A,
B, C As String
        A =
Microsoft.VisualBasic.Left(KDP.Text, 3)
        B = Microsoft.VisualBasic.Mid(KDP.Text,
5, 3)
        C =
Microsoft.VisualBasic.Right(KDP.Text, 3)
        No_urut.Text = C
        If A = "TOK" Then
            Type_p.Text = "Toko"
            Beban.Text = 25000
            Harga_M3.Text = 300
        ElseIf
A = "RUM" Then
            Type_p.Text = "Rumah"
            Beban.Text = 15000
            Harga_M3.Text = 100
        ElseIf
A = "SWA" Then
            Type_p.Text = "Swalayan"
            Beban.Text = 10000
            Harga_M3.Text = 200
        ElseIf
A = "PAB" Then
            Type_p.Text = "Pabrik"
            Beban.Text = 250000
            Harga_M3.Text = 500
        End If
        If B = "MED" Then
            Nama_D.Text = "Medan"
        ElseIf
B = "BEL" Then
            Nama_D.Text = "Belawan"
        ElseIf
B = "TEM" Then
            Nama_D.Text = "Aksara"
        ElseIf
B = "MAR" Then
            Nama_D.Text = "Marendal"
        ElseIf
B = "BIN" Then
            Nama_D.Text = "Binjay"
        ElseIf
B = "PAK" Then
            Nama_D.Text = "Lubuk Pakam"
        End If
    End Sub
    Private Sub Kode_p_KeyPress(ByVal
sender As Object,
ByVal e As
System.Windows.Forms.KeyPressEventArgs) Handles
Kode_p.KeyPress
        If
Asc(e.KeyChar) = 13 Then
            kodeplg()
        End If
    End Sub
    Private Sub Rata_rata_KeyPress(ByVal
sender As Object,
ByVal e As
System.Windows.Forms.KeyPressEventArgs) Handles
Rata_rata.KeyPress
        If
Asc(e.KeyChar) = 13 Then
            PerBulan.Text = Rata_rata.Text * 30
            Total.Text = PerBulan.Text *
Harga_M3.Text + Val(Beban.Text)
            Pajak.Text = 0.01 * Total.Text
            Pembayaran.Text = Val(Total.Text) +
Val(Pajak.Text)
        End If
    End Sub
    Sub
ISIKDP()
        KDP.Items.Add("TOK-MED-001")
        KDP.Items.Add("TOK-BEL-001")
        KDP.Items.Add("TOK-TEM-001")
        KDP.Items.Add("TOK-MAR-001")
        KDP.Items.Add("TOK-BIN-001")
        KDP.Items.Add("TOK-PAK-001")
        KDP.Items.Add("RUM-MED-001")
        KDP.Items.Add("RUM-BEL-001")
        KDP.Items.Add("RUM-TEM-001")
        KDP.Items.Add("RUM-MAR-001")
        KDP.Items.Add("RUM-BIN-001")
        KDP.Items.Add("RUM-PAK-001")
        KDP.Items.Add("SWA-MED-001")
        KDP.Items.Add("SWA-BEL-001")
        KDP.Items.Add("SWA-TEM-001")
        KDP.Items.Add("SWA-MAR-001")
        KDP.Items.Add("SWA-BIN-001")
        KDP.Items.Add("SWA-PAK-001")
        KDP.Items.Add("PAB-MED-001")
        KDP.Items.Add("PAB-BEL-001")
        KDP.Items.Add("PAB-TEM-001")
        KDP.Items.Add("PAB-MAR-001")
        KDP.Items.Add("PAB-BIN-001")
        KDP.Items.Add("PAB-PAK-001")
    End Sub
    Sub
keterangan()
        Ket.Text = "Cara
Penginputan Dengan Text Box" & vbCrLf & _
        "       Type-Kota-No.Urut" &
vbCrLf & _
        "Contoh
= PAB-PAK-001" & vbCrLf & _
        "Type         Kota" & vbCrLf & _
        "--------------------------"
& vbCrLf & _
        "PAB          MED" & vbCrLf & _
        "SWA         BEL" & vbCrLf & _
        "RUM         TEM" & vbCrLf & _
        "TOK          MAR" & vbCrLf & _
        "                  BIN" & vbCrLf
& _
        "                  PAK" & vbCrLf
& vbCrLf & _
        "NO
URUT HANYA BOLEH 3 ANGKA"
    End Sub
    Private Sub Form1_FormClosing(ByVal
sender As Object,
ByVal e As
System.Windows.Forms.FormClosingEventArgs) Handles
Me.FormClosing
        e.Cancel = True
        If
MsgBox("Anda Yakin Keluar?",
MsgBoxStyle.YesNo) = MsgBoxResult.Yes Then
            Me.Hide()
        End If
    End Sub
    Private Sub Form1_Load(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles MyBase.Load
        ISIKDP()
        keterangan()
    End Sub
    Private Sub KDP_SelectedIndexChanged(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles
KDP.SelectedIndexChanged
        kodeplgCOMBO()
    End Sub
    Private Sub Button1_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
        Kode_p.Visible = True
        KDP.Visible = False
        Cara.Visible = False
        Ket.Visible = True
    End Sub
    Private Sub Button2_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
        KDP.Visible = True
        Kode_p.Visible = False
        Cara.Visible = False
        Ket.Visible = False
    End Sub
    Private Sub Rata_rata_TextChanged(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles Rata_rata.TextChanged
        If Not IsNumeric(Rata_rata.Text) Then
            Rata_rata.Clear()
        End If
    End Sub
    Private Sub Ket_TextChanged(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles Ket.TextChanged
    End Sub
    Private Sub BtnHapus_Click(ByVal
sender As System.Object, ByVal e As
System.EventArgs) Handles BtnHapus.Click
        brsh(Me)
        keterangan()
    End Sub
    Sub brsh(ByVal F As Form)
        Dim x As Object
        For Each x In F.Controls
            If TypeOf x Is TextBox Then x.text = ""
            If TypeOf x Is ComboBox Then x.text = ""
        Next
    End Sub
End Class
Menggunakan TEXBOX

Menggunakan COMBOBOX



