protected override async Task LoadData(bool isRefresh, bool add = false, int offset = 0) { if (ItemsLoaded && !add && !isRefresh) { return; } HasErrors = false; try { if (!add) { SetProgressBar("Getting channels..."); } IsLoadingMore = add; var response = await _vidMeClient.GetChannelsAsync(); if (response != null) { if (Items == null || !add) { Items = new ObservableCollection <ChannelItemViewModel>(); } Items.AddRange(response.Select(x => new ChannelItemViewModel(x))); CanLoadMore = false; ItemsLoaded = true; } } catch (Exception ex) { HasErrors = true; } IsLoadingMore = false; SetProgressBar(); }