参数超出范围，启用了搜索的DialogViewController

Question

我有一个EnableSearch = true的DialogViewController。搜索工作正常，并在对话框中显示结果。如果我导航到一个结果元素或另一个选项卡，然后返回到搜索选项卡并尝试点击任何搜索结果元素，我在DialogViewController.cs (var element = section.Elements indexPath.Row;)的第463行得到“参数超出范围。\n参数名称:索引”。

public class SearchView : DialogViewController
    {
        IFlickService _flickService;
        static IEnumerable<Flick> _flicks;

        public SearchView(IFlickService flickService) : base (UITableViewStyle.Grouped, null, true)
        {
            _flickService = flickService;
            _flicks = new List<Flick>();

            CreateUI();
        }

        public override void SearchButtonClicked (string text)
        {
            base.SearchButtonClicked (text);
            _flicks = _flickService.Search(text);
            CreateUI();         
        }

        void CreateUI()
        {
            EnableSearch = true;

            Root = new RootElement("Search For Flicks") {
                new Section(){
                    from f in _flicks
                    select (Element) new FlickElement(f, delegate { 
                        NavigationController.PushViewController(new FlickDetailView(_flickService, f), true);
                    })
                }
            };
        }   
    }

Answer 1

答案是覆盖ViewWillAppear()，并将我对CreateUI()的调用从构造函数移到ViewWillAppear()。我还必须将EnableSearch = true移回到构造函数中，因为它应该在ViewWillAppear()之前设置。