How to use JObject.FromObject to get a json with no propertyname - json

Question

I use NewtonSoft JSON.Net. I have a collection of namevalue pair and i need to get a json that looks like
{"cot":"1","mac":"2","cot":"8"}
Note that i can have duplicate names here.
I have two options here
a) i can use Dictionary as my underlying collection and when i do, i get the desired result but i cant add duplicate key.
b) i have have a list of KeyValuePair but in this case, the result json is not in the structure i wanted.
Any idea how to get the desired result? thanks!
var listData = new List<KeyValuePair<string, string>>();
listData.Add(new KeyValuePair<string, string>("cot", "1"));
listData.Add(new KeyValuePair<string, string>("mat", "1"));
listData.Add(new KeyValuePair<string, string>("cot", "2"));
var dicData = new Dictionary<string, string>();
dicData.Add("cot", "1");
dicData.Add("mat", "1");
Console.WriteLine("Output from LIST");
Console.WriteLine(JArray.FromObject(listData));
Console.WriteLine();
Console.WriteLine("Output from Dictionary");
Console.WriteLine(JObject.FromObject(dicData));
Output from LIST
[
{
"Key": "cot",
"Value": "1"
},
{
"Key": "mat",
"Value": "1"
},
{
"Key": "cot",
"Value": "2"
}
]
Output from Dictionary
{
"cot": "1",
"mat": "1"
}

Answer 1

The JSON
'{"cot":"1","mac":"2","cot":"8"}'
will parse to a javscript object :
{"cot":"8","mac":"2"}.
Try
dicData.Add("cot", "8")
and see if it gets what you want.
You can also try concatenating strings until you get the desired JSON.
Like
var jsonOutput = "{"
//for each key value...
jsonOutput += "key : "+ value.toString + ","
//...etc
//then remove the last trailing comma, and add a "}"