[Tutorial] Fazendo uma Calculadora no Visual Basic 2008

Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If Button1.Enabled = True Then TextBox3.Text = Val(TextBox1.Text) + Val(TextBox2.Text)
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        If Button2.Enabled = True Then TextBox3.Text = Val(TextBox1.Text) - Val(TextBox2.Text)
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        If Button3.Enabled = True Then TextBox3.Text = Val(TextBox1.Text) * Val(TextBox2.Text)
    End Sub

    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        If Button4.Enabled = True Then TextBox3.Text = Val(TextBox1.Text) / Val(TextBox2.Text)
    End Sub

    Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
        If Button5.Enabled = True Then TextBox3.Text = Val(TextBox1.Text) ^ Val(TextBox2.Text)
    End Sub

    Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click

    End Sub
End Class