Create batches in linq

Question

Can someone suggest a way to create batches of a certain size in linq?

Ideally I want to be able to perform operations in chunks of some configurable amount.

Answer 1

An easy version to use and understand.

    public static List> chunkList(List listToChunk, int batchSize)
    {
        List> batches = new List>();

        if (listToChunk.Count == 0) return batches;

        bool moreRecords = true;
        int fromRecord = 0;
        int countRange = 0;
        if (listToChunk.Count >= batchSize)
        {
            countRange = batchSize;
        }
        else
        {
            countRange = listToChunk.Count;
        }

        while (moreRecords)
        {
            List batch = listToChunk.GetRange(fromRecord, countRange);
            batches.Add(batch);

            if ((fromRecord + batchSize) >= listToChunk.Count)
            {
                moreRecords = false;
            }

            fromRecord = fromRecord + batch.Count;

            if ((fromRecord + batchSize) > listToChunk.Count)
            {
                countRange = listToChunk.Count - fromRecord;
            }
            else
            {
                countRange = batchSize;
            }
        }
        return batches;
    }