public void NavigatedTo()
 {
     WatchedItems.Clear();
     WatchedItems.AddRange(_watchedItemsManager.Entries.Select(entry =>
     {
         var vmType = entry.Domain == CrawlerDomain.Yahoo
             ? typeof(WatchedItemViewModel <YahooItem>)
             : typeof(WatchedItemViewModel);
         var vm       = _lifetimeScope.TypedResolve <WatchedItemViewModel>(vmType, entry);
         vm.IsLoading = true;
         return(vm);
     }));
     _watchedItemsManager.StartAggregatingWatchedItemsData();
 }