gistfile1.cs

class MyTabBarController () : UITabBarController
{
    public MyTabBarController () : base ()
    {
    }

    public override void ViewWillAppear (bool animated)
    {
        base.ViewWillAppear (animated);
    
        var tabBarControllers = new UIViewController[] {
            new MyDialogViewController () {
                TabBarItem = new UITabBarItem ("Tab 1", Image, 0)
            },
            new MyDialogViewController () {
                TabBarItem = new UITabBarItem ("Tab 2", Image, 0)
            }
        };
        this.SetViewControllers (tabBarControllers, true);
        this.Title = "TabBarController Title";
    }
}

class MyDialogViewController () : DialogViewController
{
    public MyDialogViewController () : base (null)
    {
    }
    
    public override void ViewWillAppear (bool animated)
    {
        this.Root = CreateRoot ();
    }
    
    RootElement CreateRoot ()
    {		
        var root = new RootElement ("Root Element") {
            new Section ("Radio Group") {
                CreateRoot_RadioSelections ()
            }
        };
    
        return root;
    }
    
    RootElementWithEvents CreateRoot_RadioSelections ()
    {
        // Populate the elements
        var radioGroup = new RadioGroup (0);
        var section = new Section ();
    
        for (int i = 0; i < 10; i++) {
            section.Add (new RadioElement (i.ToString ()));
        }
    
        var element = new RootElementWithEvents("Delivery Priority", radioGroup) {
            section
        };
    
        return element;
    }
}