deserialize multi layer json object to c# object class

Question

I'm trying to deserialize a json object into ac# object class. I checked how to read in a json file but I could only find examples for how to do this with a simple json but nothing about how to do it with a multi layer json like this:

{
    "user":
    {
        "inventory":
        {
            "slot1": "item1",
            "slot2": "item2",
        }
    }
}

invntory is not a simple string or int but another json object. I couldn't even find out how a json object variable type is spelled in c# so that I can save the inventory object itself.

public object inventory;

didn't work.

Answer 1

By Using This Site https://json2csharp.com/ To Convert JSON To C# Class

public class Inventory    {
  public string slot1 { get; set; } 
  public string slot2 { get; set; } 
}

public class User    {
  public Inventory inventory { get; set; } 
}

// Main Class
public class Root    {
  public User user { get; set; } 
}

Now Convert Your JSON To C# Class Object by Using https://www.nuget.org/packages/Newtonsoft.Json/

// JSON 
string Json = "{'user': {'inventory': {'slot1': 'item1','slot2': 'item2'}}}";

// Desterilized Object 
var myDeserializedClass = JsonConvert.DeserializeObject<Root>(Json); 

Answer 2

right now I'm trying to do it this way:

public List<User> users;

    TextAsset jsonFile = Resources.Load<TextAsset>("Data/" + fileName);
    User userInJson = JsonUtility.FromJson<User>(jsonFile.text);
    users.Add(userInJson);

but for

users.Add(userInJson);

I get a NullReferenceException: Object reference not set to an instance of an object and I'm not sure why.