Quiz Mencari Harga Fotocopy

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim x As Integer
        For x = 10000 To 1 Step -100
            j_lembar.Items.Add(x)
        Next

        hpl.Items.Add(90)
        hpl.Items.Add(100)
    End Sub

    Private Sub Buttonproses_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Buttonproses.Click
        If j_lembar.Text >= 200 Then
            T_harga.Text = j_lembar.Text * HPL.Text
            If T_harga.Text > 500000 Then
                Discount.Text = 0.15 * T_harga.Text
            End If
        End If
        Pembayaran.Text = T_harga.Text - Discount.Text
    End Sub

    Private Sub Buttonhapus_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Buttonhapus.Click
        j_lembar.Text = ""
        hpl.Text = ""
        T_harga.Text = ""
        Discount.Text = ""
        Pembayaran.Text = ""
    End Sub

    Private Sub Button3keluar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3keluar.Click
        Dim tanya As String
        tanya = MsgBox("Apakah Anda ingin keluar??", MsgBoxStyle.Question + MsgBoxStyle.YesNo)
        If tanya = vbYes Then
            Me.Close()
        Else
            Exit Sub
        End If

    End Sub
End Class