Question 161836 in Json Question posted in
Our archive of expertly curated questions and answers provides insights and solutions to common problems related to this popular data interchange format. From parsing and manipulating JSON data to integrating it with various programming languages and web services, our archive has got you covered. Start exploring today and take your JSON skills to the next level

Can C# convert a Dictionary<string, Dictionary<string,string>> to a JsonObject?

I am trying to return JsonObject as the interface of my method is –
public Task<ServiceResult<JsonObject>> GetTranslation(string language); but my test fails at expectedData:

  var apiResponse = new Dictionary<string, Dictionary<string, string>>() 
      {
        { "PAGE_NAME", new Dictionary<string, string>() { { "KEY_NAME", "LOCALE IN PARAMETER LANGUAGE" }, { "COPY_TO_CLIPBOARD", "Copy to clipboard" } } }
      };

      var jsonString = JsonConvert.SerializeObject(apiResponse);
      var expectedData = JsonConvert.DeserializeObject<JsonObject>(jsonString);

Error Message: Newtonsoft.Json.JsonSerializationException : Unable to find a default constructor to use for type System.Text.Json.Nodes.JsonObject. Path 'PAGE_NAME', line 1, position 13.

I can’t change the interface as it can’t deserialize the returned object.

Tags:

2

Answers


  1. 0

    I would recommend two options,

    Option 1 :

    Create the Json object as class – you can convert using online Json to c# convertors or Paste your Json as C# using Edit>Paste Special>Paste JSON as C# (in Visual Studio), created below classes based on your sample provided.

    public class PAGENAME
{
    public string KEY_NAME { get; set; }
    public string COPY_TO_CLIPBOARD { get; set; }
}

public class Root
{
    public PAGENAME PAGE_NAME { get; set; }
}

    Post that in the DeserializeObject , we should use Root class

    var apiResponse = new Dictionary<string, Dictionary<string, string>>()
  {
    { "PAGE_NAME", new Dictionary<string, string>() { { "KEY_NAME", "LOCALE IN PARAMETER LANGUAGE" }, { "COPY_TO_CLIPBOARD", "Copy to clipboard" } } }
  };

        var jsonString = JsonConvert.SerializeObject(apiResponse);
        var expectedData = JsonConvert.DeserializeObject<Root>(jsonString);

    Option 2:

    Use JObject from Newtonsoft.Json.Linq

    var expectedData = JsonConvert.DeserializeObject<JObject>(jsonString);

    The exact error is because JsonObject doesn’t have any default constructors.

    Login or Signup to reply.
  2. 0

    Try simply parsing the JSON string:

    using System.Text.Json.Nodes;

// ...

var expectedData = JsonObject.Parse(jsonString)!.AsObject();
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search