Make the JSON string to be tree based after deserialization without the class

I have the following JSON string

{"fields": "{\n  \"CurrentPage\": 14,\n  \"CurrentSubPageNo\": 18,\n  \"IsFileUpload\": false,\n  \"VisitedPages\": [\n    2,\n    3,\n    4,\n    6,\n    7,\n    8,\n    10,\n    11,\n    12,\n    13,\n    14\n  ]\n}"}

How can I make it to be like the following in C#?

{"fields":{"CurrentPage":14,"CurrentSubPageNo":18,"IsFileUpload":false,"VisitedPages":[2,3,4,6,7,8,10,11,12,13,14]}}

I am using Newtonsoft.Json and I do not know on how to achieve like the above result

Please do take a note that the value inside fields can be dynamic (which the key and value inside it can be present or not), which is why deserialize to a class for the value inside fields is not an option for me

Anyone knows on how to do it?

Thank you very much

This is reasonably simple:

• Deserialize to a JObject
• Fetch the value of fields, which should be a string
• Parse that as a JObject
• Set the value of fields to the parsed value
• Reserialize the JObject to a string

Sample code - lacking error handling, of course:

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

string originalJson = File.ReadAllText("test.json");
Console.WriteLine($"Original JSON: {originalJson}");

JObject obj = JObject.Parse(originalJson);
string fieldsJson = (string) obj["fields"];
JObject fieldsObj = JObject.Parse(fieldsJson);
obj["fields"] = fieldsObj;

string newJson = obj.ToString(Formatting.None);
Console.WriteLine($"New JSON: {newJson}");

your "fields" property of json object is serialized twice, so you need just parse it twice. You can put all code in one line

json = new JObject { ["fields"] = JObject.Parse(
 (string) JObject.Parse(json)["fields"])}.ToString(Newtonsoft.Json.Formatting.None);


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