Question

how can i turn this JSON to a list of objects that have two properties first “id” and second “answer” ?

[["9","3"],["8","4"],["7","4"],["6","5"],["5","6"],["4","4"],["3","4"]]

Answer 1

Here is a solution using RegEx

string data = "[[\"9\",\"3\"],[\"8\",\"4\"],[\"7\",\"4\"],[\"6\",\"5\"],[\"5\",\"6\"],[\"4\",\"4\"],[\"3\",\"4\"]]";

var pairs = (from Match m in Regex.Matches(data, "\"[0-9]\"\\,\"[0-9]\"") 
             select m.Value.Split(',')).ToDictionary(d => d[0], d => d[1]);

Added: if you want the resulting values as int instead of strings then you can do this instead

var pairs = (from Match m in Regex.Matches(data, "\"[0-9]\"\\,\"[0-9]\"") 
        select m.Value.Split(','))
       .ToDictionary(d => Int32.Parse(d[0].Replace("\"", "")), 
                     d => Int32.Parse(d[1].Replace("\"", "")));