Private groupBox1 As GroupBox
Private radioButton2 As RadioButton
Private radioButton1 As RadioButton
Private selectedrb As RadioButton
Private WithEvents getSelectedRB As Button

Public Sub InitializeRadioButtons()
    Me.groupBox1 = New System.Windows.Forms.GroupBox()
    Me.radioButton2 = New System.Windows.Forms.RadioButton()
    Me.radioButton1 = New System.Windows.Forms.RadioButton()
    Me.getSelectedRB = New System.Windows.Forms.Button()

    Me.groupBox1.Controls.Add(Me.radioButton2)
    Me.groupBox1.Controls.Add(Me.radioButton1)
    Me.groupBox1.Controls.Add(Me.getSelectedRB)
    Me.groupBox1.Location = New System.Drawing.Point(30, 100)
    Me.groupBox1.Size = New System.Drawing.Size(220, 125)
    Me.groupBox1.Text = "Radio Buttons"

    Me.radioButton2.Location = New System.Drawing.Point(31, 53)
    Me.radioButton2.Size = New System.Drawing.Size(67, 17)
    Me.radioButton2.Text = "Choice 2"
    AddHandler Me.radioButton2.Click, AddressOf radioButton_CheckedChanged

    Me.radioButton1.Location = New System.Drawing.Point(31, 20)
    Me.radioButton1.Name = "radioButton1"
    Me.radioButton1.Size = New System.Drawing.Size(67, 17)
    Me.radioButton1.Text = "Choice 1"
    AddHandler Me.radioButton1.Click, AddressOf radioButton_CheckedChanged

    Me.getSelectedRB.Location = New System.Drawing.Point(10, 75)
    Me.getSelectedRB.Size = New System.Drawing.Size(200, 25)
    Me.getSelectedRB.Text = "Get selected RadioButton"

    Me.ClientSize = New System.Drawing.Size(292, 266)
    Me.Controls.Add(Me.groupBox1)
End Sub

Private Sub radioButton_CheckedChanged(ByVal sender As Object, ByVal e As EventArgs) _

    Dim rb As RadioButton = TryCast(sender, RadioButton)

    If rb Is Nothing Then
        MessageBox.Show("Sender is not a RadioButton")
        Return
    End If

    ' Ensure that the RadioButton.Checked property
    ' changed to true.
    If rb.Checked Then
        ' Keep track of the selected RadioButton by saving a reference
        ' to it.
        selectedrb = rb
    End If
End Sub

' Show the text of the selected RadioButton.
Private Sub getSelectedRB_Click(ByVal sender As Object, ByVal e As EventArgs) _
    Handles getSelectedRB.Click

    MessageBox.Show(selectedrb.Text)
End Sub