public async Task <IEnumerable <Car> > AllCarsAsync()
{
List <Car> carsResult = new List <Car>();
foreach (var uri in PayloadSources)
{
IEnumerable <Car> cars = await CarService.GetCarsAsync(uri);
carsResult.AddRange(cars);
}
return(carsResult);
}
public async Task <IEnumerable <Car> > AllCarsInParallelNonBlockingAsync()
{
IEnumerable <Task <IEnumerable <Car> > > allTasks = PayloadSources.Select(uri => CarService.GetCarsAsync(uri));
IEnumerable <Car>[] allResults = await Task.WhenAll(allTasks);
return(allResults.SelectMany(cars => cars));
}