Code Sample
output.ListStyle = EntreeListStyles.list_groups;
EntreeListGroup TheGroup = output.AddListGroup();
EntreeRadioButtonGroup TheInput = TheGroup.AddFormItem<EntreeRadioButtonGroup>("RBGroup1");
TheInput.Name = "Name";
TheInput.Items.Add("Yes", "Yes");
TheInput.Items.Add("No", "No");
Example Display
Note: This item style requires the ListStyle to be list_groups
Note: For a ClickActionObject to include the value entered by the user, FormSubmit must be set to true