attributes of selected html controls

tried many approaches like below to determine which web page form buttons are checked and then get all the attributes for those checked buttons, getting nowhere fast, note on the sample code below, a button was checked but nothing was found with this code, there's got to be a way to this, yes?
             Dim MyControl As  Control
                 Dim MyRadioButton As RadioButton
                 For Each MyControl In Page.Controls
                     If MyControl.GetType().FullName.ToString = "System.Web.UI.WebControls.radio" Then
                         ...