using System;

using Newtonsoft.Json;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

            var foo = @"{""DaysBefore"": 5,

                ""IdList"": [

                5,

                9,

                13,

                14

                 ],

                ""pId"": 1,

                ""mId"": 1

                }";

        var result = JsonConvert.DeserializeObject<Data>(foo);

        Console.WriteLine("DaysBefore: " + result.DaysBefore);

        Console.WriteLine("idList: " + String.Join(", ", result.idList));

        Console.WriteLine("mId: " + result.mId);

        Console.WriteLine("pId: " + result.pId);

​

    }

    public class Data

    {

        public string DaysBefore {get; set;}

        public List<int> idList{ get; set;}

        public int pId {get; set;}

        public int mId {get; set;}

    }

}

​