Jawaban Soal Nomor (3) Pemrograman Visual

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Public Class LOGIN

    Private Sub btnmasuk_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnmasuk.Click
        If username.Text = "arwin" And password.Text = "putra" Then
            Menu_Utama.Show()
            Me.Hide()


        Else
            MsgBox("data username/password salah, Caba kembali!!!")
            username.Text = ""
            password.Text = ""
        End If

    End Sub

    Private Sub btnkeluar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnkeluar.Click
        End
    End Sub
End Class

Maka Tampilan :

Public Class Menu_Utama

    Private Sub DataPembayaranPDAMToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DataPembayaranPDAMToolStripMenuItem.Click
        Tagihan_PDAM.show()
    End Sub

    Private Sub KeluarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KeluarToolStripMenuItem.Click
        End
    End Sub
End Class

Maka Tampilan:

Public Class Tagihan_PDAM

    Private Sub btnproses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnproses.Click
        Dim x As String
        x = Microsoft.VisualBasic.Left(kodepelanggan.Text, 3)
        If x = "TOK" Then
            tipepelanggan.TabIndex = "TOKO"
            biayabeban.Text = 25000
            hargaperm3.Text = 300

        ElseIf x = "RUM" Then
            tipepelanggan.Text = "RUMAH"
            biayabeban.Text = 15000
            hargaperm3.Text = 100

        ElseIf x = "SWA" Then
            tipepelanggan.Text = "SWALYAN"
            biayabeban.Text = 10000
            hargaperm3.Text = 200

        ElseIf x = "PAB" Then
            tipepelanggan.Text = "PABRIK"
            biayabeban.Text = 25000
            hargaperm3.Text = 500

        End If

        x = Microsoft.VisualBasic.Mid(kodepelanggan.Text, 4, 1)

        If x = "-" Then


        End If

        x = Microsoft.VisualBasic.Mid(kodepelanggan.Text, 5, 3)
        If x = "MED" Then
            daerahpelanggan.Text = "MEDAN"
        ElseIf x = "BEL" Then
            daerahpelanggan.Text = "BELAWAN"
        ElseIf x = "TEM" Then
            daerahpelanggan.Text = "AKSARA"
        ElseIf x = "BIN" Then
            daerahpelanggan.Text = "BINJAI"
        ElseIf x = "PAK" Then
            daerahpelanggan.Text = "LUBUK-PAKAM"



        End If

        x = Microsoft.VisualBasic.Mid(kodepelanggan.Text, 8, 1)

        If x = "-" Then


        End If


        nomorurut.Text = Microsoft.VisualBasic.Mid(kodepelanggan.Text, 9, 3)

        totaltagihan.Text = Val(biayabeban.Text) + Val(hargaperm3.Text) * Val(jumlahpemakaian.Text)

        totaltagihanppn.Text = (0.01) * Val(totaltagihan.Text) + Val(totaltagihan.Text)
    End Sub
    Private Sub btnhapus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnhapus.Click
        kodepelanggan.Text = ""
        daerahpelanggan.Text = ""
        tipepelanggan.Text = ""
        biayabeban.Text = ""
        hargaperm3.Text = ""
        jumlahpemakaian.Text = ""
        totaltagihan.Text = ""
        totaltagihanppn.Text = ""
        nomorurut.Text = ""

    End Sub

    Private Sub btnkeluar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnkeluar.Click
        End
    End Sub
End Class

Maka Hasil Akhir Adalah: