How to get values from JObject using SelectToken when property name contains dot

Question

I got a json (see below) in a JObject named hits.
I can read single values from this object like this:

string path = hits.SelectToken("_source.path").Value<string>();  

But I can't figure out, how to read the value from "highlight.attachment.content". It seems to be a List because "[]".

I tried many ways which are not working.
There is a exception or the result is null.

Some examples of it I leave below.

How can I get the content of the List in highlight.attachment.content using SelectTokens?

{  
   "_index":"attachments",  
   "_id":"43",  
   "_source":{  
      "path":"C:\\Basis\\\doc\\00000052.pdf",  
      "attachment":{  
         "content_type":"application/pdf",  
         "format":"application/pdf; version=1.3",  
      }  
   },  
   "highlight":{  
      "attachment.content":[  
         "Grundstück\nGemarkung : Musterstadt - Testdorf\nFlur : 004\nFlurstück : 18/1\nGröße : 2492 m²\n\nvon Frau Julia <em>Berger</em>"  
      ]  
   }  
}  

here some code which is not working:

var a = hits.SelectTokens("highlight.attachment.content").Values<string>();  
var a = hits.SelectTokens("highlight.attachment.content").Values<string>();  
var a = hits.SelectTokens("highlight.attachment.content[]").Values<string>();  
var a = hits.SelectToken("highlight.attachment.content[*]");  
var a = hits.SelectTokens("highlight.attachment.content[*]").Values<string>();  
var a = hits.SelectTokens("highlight.attachment.content[0]").Values<string>();  
var a = hits.SelectTokens("highlight.attachment.content[][0]").Values<string>();  
var h = hits.SelectTokens("highlight.attachment.content[*]").Values<List<string>>();  
var h = hits.SelectToken("highlight.attachment.content").Value<List<string>>();  
var h = hits.SelectToken("highlight.attachment.content[]").Value<List<string>>();  
var h = (List<string>)hits.SelectToken("highlight.attachment.content").Value<List<string>>();  
var h = (List<string>)hits.SelectToken("highlight.attachment.content[]").Value<List<string>>();  
var h = hits.SelectTokens("highlight.attachment.content[*][]").Values<List<string>>();  
JArray array = (JArray)hits["highlight.attachment.content"];  
var high = hits.SelectToken("highlight.attachment.content");                  
var first = (JObject)hits["highlight.attachment"]["content"][0];  
var highlight = (JObject)hits["highlight.attachment"];  
var first = (JObject)hits["highlight.attachment.content[]"];  
var first = (JObject)hits["highlight.attachment.content[*]"][0];  

Answer 1

Since the property name attachment.content contains . you can escape it like this:

var tokens = jObj.SelectToken("highlight['attachment.content']");  

For more information see:

• Querying JSON with JSON Path and escaped properties

Answer 2

Using .NET Core reading the file. Full source

using System.Text.Json.Serialization;  
  
namespace JObjectQuestion.Classes  
{  
  
    public class RootData  
    {  
        public string _index { get; set; }  
        public string _id { get; set; }  
        public _Source _source { get; set; }  
        public Highlight highlight { get; set; }  
    }  
  
    public class _Source  
    {  
        public string path { get; set; }  
        public Attachment attachment { get; set; }  
    }  
  
    public class Attachment  
    {  
          
        public string content_type { get; set; }  
        public string format { get; set; }  
    }  
  
    public class Highlight  
    {  
        [JsonPropertyName("attachment.content")]  
        public string[] attachmentcontent { get; set; }  
    }  
  
}  
  

Read the data

var json = File.ReadAllText("data.json");  
RootData result = JsonSerializer.Deserialize<RootData>(json);  
var content = result.highlight.attachmentcontent;