using System;

using System.Collections.Generic;

using System.Text.Json;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var s = "{\"featureTypes\": {\n    \"featureType\": [\n      {\n        \"name\": \"PrimitiveGeoFeature\",\n        \"href\": \"http://localhost:8080/geoserver/restng/workspaces/sf/datastores/sf/featuretypes/PrimitiveGeoFeature.json\"\n      },\n      {\n        \"name\": \"archsites\",\n        \"href\": \"http://localhost:8080/geoserver/restng/workspaces/sf/datastores/sf/featuretypes/archsites.json\"\n      }\n    ]\n  }\n}";

        var o = new JsonSerializerOptions 

        {

            PropertyNameCaseInsensitive = true

        };

        var t = JsonSerializer.Deserialize<Test>(s, o);

        Console.WriteLine(t.FeatureTypes.FeatureType.Count());

    }

    public class Test {

    public GeoserverFeatureTypes FeatureTypes {get;set;}

    }

    public class GeoserverFeatureTypes

    {

        public IEnumerable<GeoserverFeatureType> FeatureType { get; set; }

    }

​

    public class GeoserverFeatureType

    {

        public string Name { get; set; }

        public string Href { get; set; }

    }

}