BatchAggregate

gistfile1.cs

public static IEnumerable<IList<T>> BatchAggregate<T>(this IEnumerable<T> source, int batchSize)
{
    var enumerator = source.GetEnumerator();
    for (int page = 0; enumerator.MoveNext(); page = page + batchSize)
    {
        var list = source
            .Skip(page)
            .Take(batchSize)
            .ToList();

        yield return list;
    }
}