# Mapping elastic query response to POCOs in NEST
**URL:** https://discuss.elastic.co/t/mapping-elastic-query-response-to-pocos-in-nest/355458
**Category:** Elasticsearch
**Tags:** language-clients
**Created:** [March 15, 2024, 9:18am UTC](https://discuss.elastic.co/t/mapping-elastic-query-response-to-pocos-in-nest/355458 "2024-03-15T09:18:15Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Daniel\_Makos](https://discuss.elastic.co/u/Daniel_Makos)
#### Post date: [March 15, 2024, 9:18am UTC](https://discuss.elastic.co/t/mapping-elastic-query-response-to-pocos-in-nest/355458/1 "2024-03-15T09:18:15Z")
Following up on this question here: [How to map C# DateTime property to @timestamp field](https://discuss.elastic.co/t/how-to-map-c-datetime-property-to-timestamp-field/327866)
I initialize the Elastic connection:
```auto
ElasticsearchClientSettings settings;
using (settings = new ElasticsearchClientSettings(new Uri($"{configOptions.Url}")))
{
settings = settings
.Authentication(authentication)
.DefaultIndex("filebeat-*-app-logs-*");
Client = new ElasticsearchClient(settings);
Client.ElasticsearchClientSettings.PropertyMappings
.Add(typeof(Audit).GetMember("Timestamp")[0], new PropertyMapping() { Name = "@timestamp" });
}
```
My query
```auto
var searchResponse = await _client.Client.SearchAsync(s => s
.Query(q => q
.MatchPhrase(m => m
.Field("fields.ThermostatId")
.Query("some-guid-here"))));
```
is able to map data to some of the Properties, namely to the text types Message and Level, all the others stay default initialized.
```auto
public class Audit
{
[Keyword(Name = "_id")]
public Guid Id { get; set; }
[Date(Name = "@timestamp")]
public DateTime Timestamp { get; set; }
[Keyword(Name = "level")]
public string Level { get; set; }
[Keyword(Name = "Message")]
public string Message { get; set; }
[Nested]
public ThermostatLog Fields { get; set; }
```
I tried manually mapping in the config but it doesn't make any difference. The annotiation in the entity class is not proven to be enough.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 12, 2024, 9:18am UTC](https://discuss.elastic.co/t/mapping-elastic-query-response-to-pocos-in-nest/355458/2 "2024-04-12T09:18:27Z")
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