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Elastic Docs ›Elasticsearch.Net and NEST: the .NET clients [1.x] ›Aggregations
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Date Histogram aggregationedit

A multi-bucket aggregation similar to the histogram except it can only be applied on date values.

Fluent DSLedit

var result = _client.Search<ElasticsearchProject>(s => s
    .Aggregations(a => a
        .DateHistogram("my_date_histogram", h => h
            .Field(p => p.StartedOn)
            .Interval("month")
        )
    )
);

var agg = result.Aggs.DateHistogram("my_date_histogram");

Object Initializer Syntaxedit

var request = new SearchRequest
{
    Aggregations = new Dictionary<string, IAggregationContainer>
    {
        { "my_date_histogram", new AggregationContainer
             {
                 DateHistogram = new DateHistogramAggregator
                 {
                     Field = "startedOn",
                     Interval = "month"
                 }
             }
        }
    }
};

var result = client.Search<ElasticsearchProject>(request);

var agg = result.Aggs.DateHistogram("my_date_histogram");

Refer to the {ref_current}/search-aggregations-bucket-datehistogram-aggregation.html[original docs] for more information.

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