How to select specific data from listbox?

In VB2008, I'm trying to create a radiobutton that only is usable when I select a certain item in a listbox.?

• What I mean is that I want to create a radiobutton that is usable only after I select a certain item in the listbox. Like, let's say one of the items in the listbox has two different shapes/forms and I want VB2008 to activate a groupbox with two radiobuttons in it only when I select that item so that I can select just one of its forms.

• Answer:

  This is from VB 2005 but I think it will still work. I created a list with just some different letters as items and then had it activate the radio buttons (in a panel) when "s" was selected from the list. You can of course select in any way you want as this is just a dumb example. I used the SelectedIndexChanged event and then either enable or disable the panel. Private Sub ListBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBox1.SelectedIndexChanged If (sender.selecteditem = "s") Then Panel1.Enabled = True Else Panel1.Enabled = False End If End Sub