This document contains code for a form with three buttons and five text boxes. Button1 calculates the average of three text boxes and displays the result in another text box, also setting the fourth text box to "Excelente" or "Reprobado" depending on its value. Button2 clears all text boxes. Button3 closes the form. Label5 and Button3 have empty click event handlers.

1. Public Class Form1
Private Sub Label5_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Label5.Click
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click

2. TextBox5.Text = (Val(TextBox1.Text) + Val(TextBox2.Text) + Val(TextBox4.Text)) / 2
If Val(TextBox4.Text) >= 10 Then
TextBox4.Text = "Excelente"
Else
TextBox4.Text = "Reprobado”
End If
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button2.Click
TextBox1.Clear()
TextBox2.Clear()
TextBox3.Clear()
TextBox4.Clear()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button3.Click
End
End Sub
End Class