LongListSelector and DataTemplateSelector

Question

I\'m using the LongListSelector to realize List or Grid display for my items. For this, I created a DataTemplateSelector and I change the LayoutMode property at runtime. This is

Answer 1

Here is one walk around. (Maybe the problem will be corrected with WP 8.1 Update, along with others I've spotted working with LLS. I know - this idea is ugly, hard and so on, but maybe it will be enough for your purpose:

Becouse the problem concerns 'reloading' LLS, I've forced it to initialize it every time I navigate to the page (in fact I need to initialize the whole Page - it won't work only with LLS). I've moved InitializeComponent() and buttons events and so on to OnNavigatedTo():

 protected override void OnNavigatedTo(NavigationEventArgs e)
  {
     base.OnNavigatedTo(e);

     this._contentLoaded = false;
     InitializeComponent();

     first.Click += first_Click;
     second.Click += second_Click;
     ItemLongListSelector.ItemsSource = Items;
  }

At least OnContentChanged() is fired that many Times its needed. Code you can find here.