Setting a Radio Button's State

Besides examining a radio button's state, you also can set it using the Checked property. The Checked property can take two values, True or False. Here's an example. In this case, we just set a radio button, RadioButton1, to its selected state by setting its Checked property to True:

Private Sub Button1_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Button1.Click
    RadioButton1.Checked = True
End Sub

And that's all it takes.