private async void LoadSubscriptions()
{
List <TreeItemBase> subscriptionItems = null;
IsBusy = true;
Exception error = null;
try
{
IsOffline = false;
subscriptionItems = await _subscriptionsManager.LoadSubscriptionsAsync();
var readAllItem = subscriptionItems.FirstOrDefault(t => t.Id == SpecialTags.Read);
if (readAllItem != null)
{
_tileManager.UpdateAsync(readAllItem.UnreadCount);
}
await _localStorageManager.SaveSubscriptionsAsync(subscriptionItems);
}
catch (AuthenticationApiException)
{
_apiClient.ClearSession();
_navigationService.Navigate(PageTokens.SignIn, null);
return;
}
catch (Exception ex)
{
error = ex;
_telemetryClient.TrackExceptionFull(ex);
}
finally
{
IsBusy = false;
}
if (subscriptionItems == null)
{
IsOffline = true;
IsBusy = true;
subscriptionItems = await _localStorageManager.LoadSubscriptionsAsync();
IsBusy = false;
}
if (subscriptionItems != null)
{
_rootItems = subscriptionItems;
var cat = subscriptionItems.OfType <CategoryItem>()
.FirstOrDefault(c => !_isRoot && String.Equals(c.Id, _categoryId, StringComparison.OrdinalIgnoreCase));
if (cat != null)
{
SubscriptionsHeader = cat.Title;
_isRoot = false;
TreeItems = new List <TreeItemBase>(cat.Subscriptions);
}
else
{
SubscriptionsHeader = Strings.Resources.SubscriptionsSectionHeader;
_isRoot = true;
TreeItems = _rootItems;
}
}
if (error != null)
{
var msgbox = new MessageDialog(error.Message, Strings.Resources.ErrorDialogTitle);
await msgbox.ShowAsync();
}
}
