How to read value from property inside JToken by either using the method TryGetPropertyValue or JSON path?

Question

Given a JToken called distance with the following content

{ "232": { "travelDistance": 25.0 } }

I would like to read the field travelDistance from it. First I tried this

distance.TryGetPropertyValue("travelDistance", float.MaxValue)

but this returns the fallback value float.MaxValue. Then I tried to use a JSON path

distance.SelectToken("$.travelDistance")

but this returns null. These are my debugging results

How can I read the value of the property travelDistance?

Answer 1

With JObject you can read the field values

var jObj = JObject.Parse(jsonString);
var result = Convert.ToDecimal(jObj["232"]["travelDistance"]);

OR

var result1 = Convert.ToDecimal(jObj.SelectToken("232.travelDistance"));

OR

var result2 = Convert.ToDecimal(jObj.SelectToken("*.travelDistance"));

OR

var result3 = jObj.SelectTokens("*.travelDistance")
                  .Select(x => Convert.ToDecimal(x))?
                  .FirstOrDefault();