public async Task <IIncrementalLoadResponse <TItem> > Fetch(int itemsToFetch)
{
// Calculate number of pages to retrieve
int pagesToFetch = (int)Math.Ceiling((decimal)itemsToFetch / _pageSize);
// Perform fetch
IIncrementalLoadResponse <TItem> response = await DoDataFetch(_currentPage, pagesToFetch);
// Update state
_currentPage++;
return(response);
}
/// <summary>
/// Effectively this implementation ignores count argument.
/// It just loads another page of data if needed
/// </summary>
private async Task <LoadMoreItemsResult> PerformPageLoading(int count)
{
IIncrementalLoadResponse <TItem> response = await _incrementalLoadSource.Fetch(count);
if (!_isInitialLoadDone)
{
_totalItemCount = response.TotalItemCount;
_isInitialLoadDone = true;
}
foreach (TItem item in response.Items)
{
this.Add(item);
}
LoadMoreItemsResult result =
new LoadMoreItemsResult
{
Count = (uint)response.Items.Count()
};
return(result);
}