Option Explicit On
Option Strict On

Public Class MainForm

    Private Sub btnClear_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnClear.Click
        ' clears the screen for the next calculation

        ' clear the text boxes and set the focus
        txtNumber1.Clear()
        txtNumber2.Clear()
        txtNumber3.Clear()
        txtNumber4.Clear()
        txtNumber5.Clear()
        txtNumber6.Clear()
        txtNumber7.Clear()
        txtNumber8.Clear()
        txtNumber9.Clear()
        txtResult1.Clear()
        txtResult2.Clear()
        txtResult3.Clear()
        txtResult4.Clear()
        txtResult5.Clear()
        txtResult6.Clear()
        txtResult7.Clear()
        txtResult8.Clear()
        txtResult9.Clear()
        txtNumber1.Focus()
    End Sub

    Private Sub btnExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExit.Click
        Me.Close()
    End Sub

    Private Sub btnDisplay_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDisplay.Click
        ' displays the results of the multiplication table

        Dim txtNumber1 As Integer
        Dim txtNumber2 As Integer
        Dim txtNumber3 As Integer
        Dim txtNumber4 As Integer
        Dim txtNumber5 As Integer
        Dim txtNumber6 As Integer
        Dim txtNumber7 As Integer
        Dim txtNumber8 As Integer
        Dim txtNumber9 As Integer
        Dim txtResult1 As Integer
        Dim txtResult2 As Integer
        Dim txtResult3 As Integer
        Dim txtResult4 As Integer
        Dim txtResult5 As Integer
        Dim txtResult6 As Integer
        Dim txtResult7 As Integer
        Dim txtResult8 As Integer
        Dim txtResult9 As Integer
        Dim lblX1 As Integer
        Dim lblX2 As Integer
        Dim lblX3 As Integer
        Dim lblX4 As Integer
        Dim lblX5 As Integer
        Dim lblX6 As Integer
        Dim lblX7 As Integer
        Dim lblX8 As Integer
        Dim lblX9 As Integer

        For txt As Integer = 1 To 9 Step 1
            txtNumber1 = txtNumber1 * lblX1
            txtNumber2 = txtNumber2 * lblX2
            txtNumber3 = txtNumber3 * lblX3
            txtNumber4 = txtNumber4 * lblX4
            txtNumber5 = txtNumber5 * lblX5
            txtNumber6 = txtNumber6 * lblX6
            txtNumber7 = txtNumber7 * lblX7
            txtNumber8 = txtNumber8 * lblX8
            txtNumber9 = txtNumber9 * lblX9
        Next txt