# How to use \_mtermvectors endpoint in NEST C#?

**URL:** <https://discuss.elastic.co/t/how-to-use--mtermvectors-endpoint-in-nest-c/96641>\
**Category:** Elasticsearch\
**Created:** [August 10, 2017, 3:46pm UTC](https://discuss.elastic.co/t/how-to-use--mtermvectors-endpoint-in-nest-c/96641 "2017-08-10T15:46:06Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![sramalin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sramalin/32/25821_2.png) [@sramalin](https://discuss.elastic.co/u/sramalin)\
**Post date:** [August 10, 2017, 3:46pm UTC](https://discuss.elastic.co/t/how-to-use--mtermvectors-endpoint-in-nest-c/96641/1 "2017-08-10T15:46:06Z")

</div>

In elasticsearch help at  
[Multi term vectors API | Elasticsearch Guide [8.11] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-multi-termvectors.html)  
there is an \_mtermvectors endpoint like this

> POST /twitter/tweet/\_mtermvectors  
> {  
> "ids" : ["1", "2"],  
> "parameters": {  
> "fields": [  
> "message"  
> ],  
> "term\_statistics": true  
> }  
> }

What is the corresponding call in NEST  
I tried

> var res = Client.MultiTermVectors(new MultiTermVectorsRequest("twitter", "tweet")  
> {  
> TermStatistics = true  
> });

How can i specify the ids array? Thanks for the help!

---

<div class="post-metadata">

**Author:** ![sramalin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sramalin/32/25821_2.png) [@sramalin](https://discuss.elastic.co/u/sramalin)\
**Post date:** [August 12, 2017, 11:11pm UTC](https://discuss.elastic.co/t/how-to-use--mtermvectors-endpoint-in-nest-c/96641/2 "2017-08-12T23:11:08Z")

</div>

Used the lowlevel call like below if anyone needs it

```
string sbRequestBody = "{\"ids\":[\"1\", \"2\"],\"parameters\":{\"fields\": [\"message\"],\"term_statistics\":true}}";			
var termvecResponse =Client.LowLevel.Mtermvectors<MultiTermVectorsResponse>("twitter", "tweet", sbRequestBody);

foreach (var doc in termvecResponse.Body.Documents)
			{
				var item = doc.TermVectors["message"];

				Console.WriteLine("Document: {0}",doc.Id);
				foreach (var term in item.Terms)
				{
					Console.WriteLine("{0}: {1}", term.Key, term.Value.TermFrequency);

				}
			}

```

High level call:

```
var tvecR = client.MultiTermVectors(new MultiTermVectorsRequest("twitter", typeof(tweet))
{
    Fields = Infer.Fields<tweet>(f => f.Body), // all docs will use these fields
    Documents = idRange.Select(n => new MultiTermVectorOperation<tweet>(n)
    {
        TermStatistics = true
    })
});
```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 9, 2017, 11:11pm UTC](https://discuss.elastic.co/t/how-to-use--mtermvectors-endpoint-in-nest-c/96641/3 "2017-09-09T23:11:08Z")

</div>

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