NEST Scan - Scroll

ElasticClient client = new ElasticClient(new ConnectionSettings(new Uri("http://localhost:9200"),"index"));
var result = client.Search<IndexType>(x => x.SearchType(SearchType.Scan)
	.Size(1)
	.Scroll("12s"));
Assert.IsNotNull(result);
var docCount = result.Documents.Count();
Console.WriteLine("count :"+docCount);

var results2 = client.Scroll<IndexType>(x => x.Scroll("12s").ScrollId(result.ScrollId));
var docCount2 = results2.Documents.Count();
Console.WriteLine("count2 :" + docCount2);

NEST Scan and scroll example.

Link to ES docs
https://www.elastic.co/guide/en/elasticsearch/guide/current/scan-scroll.html