deserlize json file with coordinates to C# classes

Question

I've a json file with coordinates [x,y] I would like to do query based on the coordinates but i did not know how to transfer this to c# classes. I tried using https://json2csharp.com/ but it gives me the classes like this

public class DatasetData
{
    public int id { get; set; }
    public int channel_id { get; set; }
    public string location { get; set; }
    public int speed_1 { get; set; }
    public int speed_2 { get; set; }
    public int speed_3 { get; set; }
}

public class Root
{
    public List<DatasetData> dataset_data { get; set; }
}

This is the json. As you see I've inside the location; type and coordinates but i don't know to extract them to classes and using them.

{
   "dataset_data":[
      {
         "id":1234,
         "channel_id":2,
         "location":"{\"type\":\"Point\",\"coordinates\":[-1.17273271,51.9132423]}",
         "speed_1":1,
         "speed_2":2,
         "speed_3":3
      }
   ]
}

Answer 1

The problem with your json is that the location is not an object rather than a string. So, you need to deserialize that as well.

If you define your Location class as Lasse V. Karlsen suggested:

public class Location
{
    public string type { get; set; }
    public List<double> coordinates { get; set; }
}

Then all you need to do is to modify your DatasetData class like this:

public class DatasetData
{
    ...
    public string location { set; private get;}
    public Location Location => JsonConvert.DeserializeObject<Location>(location);
    ...
}

• The location property is write only from the deserialization perspective
• The Location property is read only from the deserialization perspective