using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""data"": {

                ""valve_maker"": [],

                ""water_volume"": [

                  ""15L"",

                  ""20L"",

                  ""...""

                ],

                ""cylinder_manufacturer"": [

                  ""Tianhai""

                ],

                ""qc_stamp"": [

                  ""TS""

                ],

                ""reference_standard"": [

                  ""GB 5099""

                ],

                ""production_licence"": [

                  ""TS2210752-2016""

                ],

                ""valve_production_licence"": [

                  ""TSF210030""

                ],

                ""rate_of_residual_deformation"": {

                  ""1"": ""<3%"",

                  ""2"": ""<10%""

                },

                ""material_number"": {

                  ""1"": ""30CrMo"",

                  ""2"": ""34CrMo4"",

                  ""3"": ""...""

                },

                ""heat_treatment"": {

                  ""1"": ""..."",

                  ""2"": ""...""

                },

                ""drawing_number"": {

                  ""1"": ""..."",

                  ""2"": ""...""

                },

                ""cylinder_thickness"": []

              }

            }";

        Data data = JsonConvert.DeserializeObject<RootObject>(json).Data;

        Dump("Valve maker", data.ValveMaker);

        Dump("Water volume", data.WaterVolume);

        Dump("Cylinder manufacturer", data.CylinderManufacturer);

        Dump("QC stamp", data.QCStamp);

        Dump("Reference standard", data.ReferenceStandard);

        Dump("Production license", data.ProductionLicense);

        Dump("Valve production license", data.ValveProductionLicense);

        Dump("Rate of residual deformation", data.RateOfResidualDeformation);

        Dump("Material number", data.MaterialNumber);

        Dump("Heat treatment", data.HeatTreatment);

        Dump("Drawing number", data.DrawingNumber);

        Dump("Cylinder thickness", data.CylinderThickness);

    }

    static void Dump(string name, List<string> list)

    {

        Console.WriteLine(name + ": ");

        if (list.Count> 0)

        {

            foreach (var item in list)

            {

                Console.WriteLine("   " + item);

            }

        }

        else

        {

            Console.WriteLine("   (none)");

        }

    }

    static void Dump(string name, Dictionary<string, string> dict)

    {

        Console.WriteLine(name + ": ");

        if (dict.Count > 0)

        {

            foreach (var kvp in dict)

            {

                Console.WriteLine("   " + kvp.Key + " - " + kvp.Value);

            }

        }

        else

        {

            Console.WriteLine("   (none)");

        }

    }

}

​

class RootObject

{

    public Data Data { get; set; }

}

​

class Data

{

    [JsonProperty("valve_maker")]

    public List<string> ValveMaker { get; set; }

    [JsonProperty("water_volume")]

    public List<string> WaterVolume { get; set; }

    [JsonProperty("cylinder_manufacturer")]

    public List<string> CylinderManufacturer { get; set; }

    [JsonProperty("qc_stamp")]

    public List<string> QCStamp { get; set; }

    [JsonProperty("reference_standard")]

    public List<string> ReferenceStandard { get; set; }

    [JsonProperty("production_licence")]

    public List<string> ProductionLicense { get; set; }

    [JsonProperty("valve_production_licence")]

    public List<string> ValveProductionLicense { get; set; }

    [JsonProperty("rate_of_residual_deformation")]

    public Dictionary<string, string> RateOfResidualDeformation { get; set; }

    [JsonProperty("material_number")]

    public Dictionary<string, string> MaterialNumber { get; set; }

    [JsonProperty("heat_treatment")]

    public Dictionary<string, string> HeatTreatment { get; set; }

    [JsonProperty("drawing_number")]

    public Dictionary<string, string> DrawingNumber { get; set; }

    [JsonProperty("cylinder_thickness")]

    public List<string> CylinderThickness { get; set; }

}

​