Deserialize Open Street Map JSON in C#

CSharp · Console

/Program.cs

using System;
using JsonSubTypes;
using Newtonsoft.Json;

namespace ConsoleApp1
{
  public  class Program
    {
       public static void Main(string[] args)
        {
            var jsonText = @"{
    ""version"": 0.6,
    ""generator"": ""Overpass API 0.7.55.7 8b86ff77"",
    ""osm3s"": {
      ""timestamp_osm_base"": ""2019-05-21T18:03:02Z"",
      ""copyright"": ""The data included in this document is from www.openstreetmap.org. The data is made available under ODbL.""
    },
    ""elements"": [
      {
        ""type"": ""node"",
        ""id"": 4949106384,
        ""lat"": 32.2686857,
        ""lon"": -107.738218,
        ""tags"": {
          ""highway"": ""turning_circle""
        }
      },
      {
        ""type"": ""way"",
        ""id"": 14527404,
        ""nodes"": [
          142882281,
          3048075541,
          1598998260
        ],
        ""tags"": {
          ""highway"": ""residential"",
          ""name"": ""West Apple Street"",
          ""tiger:cfcc"": ""A41"",
          ""tiger:county"": ""Luna, NM"",
          ""tiger:name_base"": ""Apple"",
          ""tiger:name_direction_prefix"": ""W"",
          ""tiger:name_type"": ""St"",
          ""tiger:reviewed"": ""no""
        }
      }
    ]
  }";
            var json = JsonConvert.DeserializeObject<OSMdata>(jsonText);
            foreach (Element jsonElement in json.elements)
            {
                Console.WriteLine(jsonElement.GetType());
            }
        }
    }

    public class OSMdata
    {
        public float version { get; set; }
        public string generator { get; set; }
        public Osm3s osm3s { get; set; }
        [JsonConverter(typeof(JsonSubtypes), "type")]
        public Element[] elements { get; set; }
    }

    public class Osm3s
    {
        public DateTime timestamp_osm_base { get; set; }
        public string copyright { get; set; }
    }


    [JsonConverter(typeof(JsonSubtypes), "type")]
    [JsonSubtypes.KnownSubType(typeof(Node), "node")]
    [JsonSubtypes.KnownSubType(typeof(Edge), "way")]
    public abstract class Element : OSMdata
    {
        public abstract string type { get; }
    }

    public class Node : Element
    {
        public override string type { get { return "node"; } }
        public long id { get; set; }
        public float lat { get; set; }
        public float lon { get; set; }
        public NodeTags tags { get; set; }
    }

    public class NodeTags
    {
        public string highway { get; set; }
        public string _ref { get; set; }
    }

    public class Edge : Element
    {
        public override string type { get { return "way"; } }
        public long id { get; set; }
        public long[] nodes { get; set; }
        public EdgeTags tags { get; set; }
    }

    public class EdgeTags
    {
        public string highway { get; set; }
        public string name { get; set; }
        public string cfcc { get; set; }
        public string county { get; set; }
        public string oneway { get; set; }
    }

}