static private async Task <IEnumerable <T> > LoadData <T>(IDataSource <T> dataSource, string cacheKey) where T : BindableSchemaBase
{
// Read items from Cache
var records = AppCache.GetItems <T>(cacheKey);
if (NetworkInterface.GetIsNetworkAvailable())
{
// Read items from DataSource
var dsRecords = await dataSource.LoadData();
if (dsRecords != null)
{
AppCache.AddItems(cacheKey, dsRecords);
records = dsRecords;
}
}
return(records);
}