RootElements in NavigationController

Hi,


II have the following code:


public UINavigationController _nav;

private UIBarButtonItem _button;

 public TablaDialog () : base (UITableViewStyle.Plain, null)

{

  Root = new RootElement ("ROOT") ;

_nav = new UINavigationController(this);

Section s = new Section();

RootElement r = new RootElement("Top");

r.createOnSelected=addViewController; ///If I comment this line  work it

s.Add(r);

Root.Add(s);

}

 private UIViewController addViewController(RootElement e)

{

 DialogViewController d = new DialogViewController(e);

Section s = new Section ("Seccion");

s.Add(new RootElement("Element"));

e.Add(s);

return d;

 }

 }

I want set the "back" button into _nav when I stay in "Top". If I comment
de line of I mention, it's ok but I lost the behaviour that I want.


Thanks and sorry for my english.
Juan M Gómez Álvarez
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