private async Task <LoadMoreItemsResult> LoadMoreItemsAsync(IncrementalLoaderCollection <StoreApp> collection, uint count)
{
List <StoreApp> loadedAapps = new List <StoreApp>();
if (LoadingApps)
{
return(new LoadMoreItemsResult()
{
Count = 0
});
}
UiManager.ShowLoading();
AppQueryParameters.PageIndex = StoreApps.Count / AppQueryParameters.PageSize;
LoadingApps = true;
try {
loadedAapps.AddRange(await AppManager.Instance.GetAppsAsync(AppQueryParameters));
_hasMoreItems = (loadedAapps.Count() == AppQueryParameters.PageSize);
}
catch (Exception exp) {
_hasMoreItems = false;
View.ShowNetworkErrorMessage();
}
LoadingApps = false;
loadedAapps.ForEach(app => collection.Add(app));
UiManager.HideLoading();
return(new LoadMoreItemsResult()
{
Count = (uint)loadedAapps.Count
});
}
public CatalogPageViewModel()
{
StoreApps = new IncrementalLoaderCollection <StoreApp>(HasMoreItems, LoadMoreItemsAsync);
TopApplications = new List <StoreApp>();
TopGames = new List <StoreApp>();
_hasMoreItems = true;
}
private bool HasMoreItems(IncrementalLoaderCollection <StoreApp> dataSource)
{
return(_hasMoreItems);
}
