How to add a root node to a JSON in C# using Json.NET?

Question

I am working on Visual Studio C# project and I need to convert a JSON to XML. I receive the JSON in string format. The problem is, I need to have a root node in the JSON structure if the JSON doesn't have one, so that I can convert to XML with desired format.

Supose I have this JSON:

{
        "id": 1,
        "name": {
            "first": "Yong",
            "last": "Mook Kim"
        },
        "contact": [{
            "type": "phone/home",
            "ref": "111-111-1234"
        }, {
            "type": "phone/work",
            "ref": "222-222-2222"
        }]
}

And I want to add root node to that JSON just like that:

{
    "user": {
        "id": 1,
        "name": {
            "first": "Yong",
            "last": "Mook Kim"
        },
        "contact": [{
            "type": "phone/home",
            "ref": "111-111-1234"
        }, {
            "type": "phone/work",
            "ref": "222-222-2222"
        }]
    }
}

How can I do it with C# and JSON.NET?

Possible duplicate of Json.NET serialize object with root name — Andrei
– Andrei, Commented Jun 2, 2016 at 16:05

Andrei · Accepted Answer · 2016-06-02 16:09:06Z

10

I suppose you have user object. Just use anonymous class to add extra root node:

var obj = new { user = user };

string json = JsonConvert.SerializeObject(obj);

The resulting JSON will look like that:

{
    "user": {.../your user object/...}
}

answered Jun 2, 2016 at 16:09

Andrei

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