sharepoint radio button value online ordering food system

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Javascript

XML

C#5.0

, +

Hello i am working on a website so you can order online for a restaurant. I currently figured out how to get values of all checkboxes and dropdownlists but i still cannot seem to figure out radio buttons.
Right now i am just making a super string with all of the selected values but eventually i am going to want to make a receipt with a checkout page.
I have alot of plans to do this this but i am still getting use to the language.
XML and C#

I know both but i have never done them together. I am learning pretty quickly though.

//this seems to work alright
            XPathNodeIterator toppingIterator = myNavigator.Select("//my:ToppersGroup", NamespaceManager);
            s +=+ "\n";
            while (toppingIterator.MoveNext())                      
            {
                XPathNavigator node = toppingIterator.Current;
                XPathNodeIterator children = node.SelectChildren(XPathNodeType.All);
                while (children.MoveNext())
                {
                    XPathNavigator child = children.Current;
                    if (children.Current.Value == "true")
                    {
                        s += children.Current.LocalName + "\n";
                    }
                }
                MessageBox.Show(s);
            }

//this is where i am having issues getting the selected values
            //RADIO BUTTON FRUIT OR VEGGIE STICK SELECTION
            XPathNodeIterator radiobtnIterator = myNavigator.Select("//my:FruitOrVeggieGroup", NamespaceManager);
            s += "\n" + "SIDE SELECTION" + "\n" + "-------------" + "\n";
            while (radiobtnIterator.MoveNext())
            {
                XPathNavigator node = radiobtnIterator.Current;
                XPathNodeIterator children = node.SelectChildren(XPathNodeType.All);
            }