using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public class AllVars

    {

        public List<Var> vars { get; set; }

    }

    public class Var

    {

        public string UniqueId { get; set; }

        public string Type { get; set; }

        public List<VarCol> varCol { get; set; }

    }

    public class VarCol

    {

        public int VarColId { get; set; }

        public bool Visible { get; set; }

        public float Val { get; set; }

    }

    public static void Main()

    {

        var json_string = @"{

            ""vars"": [

                {

                    ""varCol"": [

                        {

                            ""visible"": false,

                            ""val"": 1

                        },

                        {

                            ""visible"": false,

                            ""val"": 5

                        },

                        {

                            ""visible"": false,

                            ""val"": 5

                        },

                        null

                    ],

                    ""Type"": ""Type1"",

                    ""UniqueId"": ""ID1""

                },

                {

                    ""varCol"": [

                        {

                            ""visible"": true,

                            ""val"": 1

                        },

                        null,

                        {

                            ""visible"": false,

                            ""val"": 5

                        },

                        null

                    ],

                    ""Type"": ""Type2"",

                    ""UniqueId"": ""ID2""

                }

            ]

        }";

        AllVars all = JToken.Parse(json_string).ToObject<AllVars>();

        foreach (Var v in all.vars)

        {

            Console.WriteLine("var id = {0}, type = {1}", v.UniqueId, v.Type);

            Console.WriteLine("  cols: {0}", v.varCol.Count);

            for (int i = 0; i < v.varCol.Count; i++)

            {

                if (v.varCol[i] != null)

                    Console.WriteLine("    {0}. val = {1}, visible = {2}", i, v.varCol[i].Val, v.varCol[i].Visible);

                else

                    Console.WriteLine("    {0}. null", i);

            }

        }

    }

}