Read JSON Data in

I am pulling data from an API and I believe it is returned as a JSON string, how can I read certain data from the string ?  There are rows of data I want to loop through and put in a datatable, but can not figure out how to extract the data.

I have attached 3 files - the first 2 is the data I want to access, the third is the name of the columns.

Path to Column NamesWhere the data is - Label and Value are two fields inside I want to access.Path To Data
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check a look to that online tools :
I will create classes reprensenting your JSON object to use with :

for example :

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give :
public class Ik
    public int a { get; set; }

public class RootObject
    public string ok { get; set; }
    public List<Ik> ik { get; set; }

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chelsea17Author Commented:
once i create the class how to call the values i want ?
in my example, if I want the ok value (which is "lol")

                string strReportData = "[{\"ok\":\"lol\",\"ik\":[{\"a\":1},{\"a\":1},{\"a\":4}]}]";
                JsonSerializer serializer = new JsonSerializer();

                RootObject reportData = (RootObject)serializer.Deserialize(strReportData, typeof(RootObject));

                string strOK = reportData.ok; // "lol"

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chelsea17Author Commented:
i get the error - Argument 1: cannot convert from 'string' to 'System.IO.TextReader'      

on this Deserialize(reportData, typeof(Rootobject));

this is the code

            var reportData = restResponse.Content;

            JsonSerializer serializer = new JsonSerializer();

            Rootobject datafromreport = (Rootobject)serializer.Deserialize(reportData, typeof(Rootobject));

            string strOK = datafromreport.allData.ToString();

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