JSON - Building Json Dynamically

Question

I am trying to build my json dynamically but cant seem to get the results within the dynamic object to store the values:

    public class CDJson : JObject
    {
        public string id { get; set; }
        public string style { get; set; }
        public string @class { get; set; }
    }
    public class CDColsJson : JObject
    {
        public string id { get; set; }
        public string style { get; set; }
        public string @class { get; set; }
        public int xsCol { get; set; }
        public int smCol { get; set; }
        public int mdCol { get; set; }
        public int lgCol { get; set; }
    }

    public string Build_CDSectionJson(string id, string style, string @class)
    {
        dynamic cdSection = new JObject();
        cdSection.section = new Constants.CDJson() { id = id, style = style, @class = @class };

        string json = JsonConvert.SerializeObject(cdSection); // WHERE THE VALUES ARE EMPTY

        return json;
    }

Code:

    var CD_Section = build.Build_CDSectionJson(sectionGUID, "", "sectioncon")

Output:

    {"section":{}}

I am passing some values but they are empty, what am i doing wrong?

I tried this:

    dynamic cdSection = new JObject();
    cdSection.section.id = id;
    cdSection.section.style = style;
    cdSection.section.@class = @class;

But came back as null.

Why would you inherit JObject? That may be why. Also take a look at newtonsoft.com/json/help/html/CreateJsonDynamic.htm — misticos
– misticos, Commented Dec 8, 2019 at 12:38
i need the json like this {"section":{ "id" : "dgdhdjhf", "style" : "somestyle", "class" : "someclass" }}. how would i achieve this? — redoc01
– redoc01, Commented Dec 8, 2019 at 12:46
You should not make cdSection a dynamic or assign arbitrary C#-type properties to it. If you want to add a property to a JObject, use cdSection.Add("section", theValue) — JLRishe
– JLRishe, Commented Dec 8, 2019 at 12:54
Also, what is it that you're actually trying to do here? Why not define a class that has a section property of type CDJson? — JLRishe
– JLRishe, Commented Dec 8, 2019 at 12:56

redoc01 · Accepted Answer · 2019-12-08 13:00:22Z

1

Thanks JLRishe

This worked great:

    JObject cdSectionAttr = new JObject();
    cdSectionAttr.Add("id", id);
    cdSectionAttr.Add("style", style);
    cdSectionAttr.Add("@class", @class);

    JObject cdSection = new JObject();
    cdSection.Add("section", cdSectionAttr);

answered Dec 8, 2019 at 13:00

redoc01

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