How to get a checked radio button in a groupbox?

Question

I have a lot of radio buttons in a groupbox. Normally I will check each radio button individually using If radiobutton1.Checked = True Then.

But I think

Answer 1

Private Sub BTN_OK_Click(sender As Object, e As EventArgs) Handles BTN_OK.Click

    For Each Ctrl In GroupBox1.Controls
        If Ctrl.checked Then MsgBox(Ctrl.text) 'for show select RadioButton Check
    Next