How to create JSON from strings without creating a custom class using JSON.Net library

Question

I have this very simple method as below:

//my current file
using Newtonsoft.Json;
string key1 = \"FirstKey\";
string key2 = \"SecondKey\";
string key3 = \"Th         


        

Answer 1

As mentioned in the comments, you could just as easily have created it using anonymous objects.

private string CreateJson(string val1, string val2, string val3, string val4, string val5, string val6) {

    var configs = new[]
    { 
        new { FirstKey = val1, SecondKey = val2, ThirdKey = val3}, 
        new { FirstKey = val4, SecondKey = val5, ThirdKey = val6}
    };

    var jsonData = JsonConvert.SerializeObject(configs);

    return jsonData;
}

Answer 2

Getting some clue from @code4life's comment in accepted answer, I realized that it is achievable through JArray object as well found in Newtonsoft.Json.Linq namespace. So, I thought of building another answer to provide an alternative in case it helps someone:

using Newtonsoft.Json.Linq;

private string CreateJson(string val1, string val2, string val3, string val4, string val5, string val6) 
{

    var configs = new[]
    { 
        new { FirstKey = val1, SecondKey = val2, ThirdKey = val3}, 
        new { FirstKey = val4, SecondKey = val5, ThirdKey = val6}
    };

    return JArray.FromObject(configs).ToString();
}

Note: Anonymous types which are being created through new { FirstKey = val1, SecondKey = val2, ThirdKey = val3} syntax can very well contain any .Net data type for that matter and not just strings which I've asked in my original post e.g.new { FirstKey = "AnyString", SecondKey = true, ThirdKey = DateTime.Now}

Answer 3

There's JsonWriter, which is not much more than StringBuilder - you do not get much constraints and can possibly end up with incorrect document

Some time ago I wanted to create simple documents WITHOUT the overhead of serialization, but with the guarantee they will be correct.

The pattern I went with is:

var doc = JSONElement.JSONDocument.newDoc(true);

using (var root = doc.addObject())
{
    root.addString("firstName", "John");
    root.addString("lastName", "Smith");
    root.addBoolean("isAlive", true);
    root.addNumber("age", 27);
    using (var addres = root.addObject("address"))
    {
        addres.addString("streetAddress", "21 2nd Street");
        addres.addString("city", "New York");
        addres.addString("state", "NY");
        addres.addString("postalCode", "10021-3100");
    }
    using (var phoneNumbers = root.addArray("phoneNumbers"))
    {
        using (var phone = phoneNumbers.addObject())
        {
            phone.addString("type", "home");
            phone.addString("number", "212 555-1234");
        }
//[....]           
    }        
}
string output = doc.getOutput();

}

The module (< 300lines) is available here: https://github.com/AXImproveLtd/jsonDocCreate