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Option Explicit On
Public Class Form1
 
  ' OBJETS : button + 2 radioButton
 
  Dim rb As New Collection()
  Dim alternat As Boolean = False
 
  Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    rb.Add(Me.RadioButton1)
    rb.Add(Me.RadioButton2)
  End Sub
 
  Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    rb(1).checked = alternat
    alternat = Not alternat
    rb(2).checked = alternat
  End Sub
 
End Class | 
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