I based my solution of Jeremy Holovacs's answer and used Take() and Skip() to create subarrays.
const int batchSize = 3;
int[] array = new int[] { 1,2,4,5.....n};
var subArrays = from index in Enumerable.Range(0, array.Length / batchSize + 1)
select array.Skip(index * batchSize).Take(batchSize);