using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Reflection;

using System.Collections.ObjectModel;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

using NUnit.Framework; // Throws NUnit.Framework.AssertionException

​

//https://stackoverflow.com/a/67658926/3744182

//https://stackoverflow.com/questions/67657601/json-convert-to-class-and-deserialze

​

public class CustomValidation

{

    public string unable_to_edit { get; set; }

    public string data_type { get; set; }

}

​

public class Field

{

    public string field_name { get; set; }

    public string field_type_name { get; set; }

    public string field_data_name { get; set; }

    public object placeholder { get; set; }

    public string default_value { get; set; }

    public string act_as_assign { get; set; }

    public CustomValidation custom_validation { get; set; }

    public string value { get; set; }

    public int group_index { get; set; }

}

​

//then correct "fields_data" type (List<List<>>) to "List<List<Field>>" 

​

// Root myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse); 

public class Info

{

    public int total_count { get; set; }

    public int current_page_total_count { get; set; }

    public int max_each_page { get; set; }

    public int current_page_number { get; set; }

    public int total_pages { get; set; }

}

​

public class Permissions

{

    public string type { get; set; }

    public string code { get; set; }

}

​

public class EntityData

{

    public string entity_name { get; set; }

    public string entity_data_name { get; set; }

    public Permissions permissions { get; set; }

    public string view { get; set; }

}

​

public class FieldGroupData

{

    public string group_name { get; set; }

    public string group_data_name { get; set; }

    public string group_id { get; set; }

    public string repeatable_group { get; set; }

    public Permissions permissions { get; set; }

}

​

public class FieldGroup

{

    public FieldGroupData field_group_data { get; set; }

    //correct "fields_data" type (List<List<>>) to "List<List<Field>>"

    //public List<List<>> fields_data { get; set; }

    public List<List<Field>> fields_data { get; set; }//List<List<Field>>

}

​

public class InstanceData

{

    public string _id { get; set; }

    public DateTime insertTimestamp { get; set; }

    public List<FieldGroup> field_groups { get; set; }

}

​

public class Datum

{

    public InstanceData instance_data { get; set; }

    public object single_permission { get; set; }

}

​

public class Root

{

    public Info info { get; set; }

    public EntityData entity_data { get; set; }

    public List<Datum> data { get; set; }

}

​

    class TestClass

    {

        public static void Test()

        {

            var myJsonResponse = GetJson();

            var myDeserializedClass = JsonConvert.DeserializeObject<Root>(myJsonResponse);

            myDeserializedClass.Dump();

        }   

        static string GetJson() => @"{

    ""info"": {

        ""total_count"": 2,

        ""current_page_total_count"": 2,

        ""max_each_page"": 500,

        ""current_page_number"": 1,

        ""total_pages"": 1

    },

    ""entity_data"": {

        ""entity_name"": ""\u05de\u05d0\u05d9\u05e8"",

        ""entity_data_name"": ""e_130"",

        ""permissions"": {

            ""type"": ""full"",

            ""code"": ""1""

        },

        ""view"": ""data table""

    },

    ""data"": [

        {

            ""instance_data"": {

                ""_id"": ""60a3a82a956ecd3228739ced"",

                ""insertTimestamp"": ""2021-05-18T14:42:34+0300"",

                ""field_groups"": [

                    {

                        ""field_group_data"": {

                            ""group_name"": ""\u05e1\u05e4\u05e8 \u05d8\u05dc\u05e4\u05d5\u05e0\u05d9\u05dd"",

                            ""group_data_name"": ""g_353"",

                            ""group_id"": ""353"",

                            ""repeatable_group"": ""0"",

                            ""permissions"": {

                                ""type"": ""full"",

                                ""code"": ""1""

                            }

                        },

                        ""fields_data"": [

                            [

                                {

                                    ""field_name"": ""\u05e9\u05dd \u05e4\u05e8\u05d8\u05d9"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2372"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""\u05de\u05d0\u05d9\u05e8"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05e9\u05dd \u05de\u05e9\u05e4\u05d7\u05d4"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2373"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""\u05e8\u05d5\u05d8\u05e4\u05dc\u05d9\u05d9\u05e9"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05d9\u05d9\u05e9\u05d5\u05d1 \u05de\u05d2\u05d5\u05e8\u05d9\u05dd"",

                                    ""field_type_name"": ""select-list"",

                                    ""field_data_name"": ""fld_2374"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""possible_values"": ""[\""\\u05db\\u05e4\\u05e8 \\u05e1\\u05d1\\u05d0\"",\""\\u05ea\\u05dc \\u05d0\\u05d1\\u05d9\\u05d1\"",\""\\u05e2\\u05d6\\u05d4\"",\""\\u05d9\\u05e8\\u05d5\\u05e9\\u05dc\\u05d9\\u05dd\""]"",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""alphabetical_order"": ""0""

                                    },

                                    ""value"": ""\u05db\u05e4\u05e8 \u05e1\u05d1\u05d0"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05d8\u05dc\u05e4\u05d5\u05df"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2375"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""055098393"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05de\u05d9\u05d9\u05dc"",

                                    ""field_type_name"": ""input-email"",

                                    ""field_data_name"": ""fld_2376"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0""

                                    },

                                    ""value"": ""meir@arma.co.il"",

                                    ""group_index"": 0

                                }

                            ]

                        ]

                    }

                ]

            },

            ""single_permission"": null

        },

        {

            ""instance_data"": {

                ""_id"": ""60a3a7e6788c2124f12b5370"",

                ""insertTimestamp"": ""2021-05-18T14:41:26+0300"",

                ""field_groups"": [

                    {

                        ""field_group_data"": {

                            ""group_name"": ""\u05e1\u05e4\u05e8 \u05d8\u05dc\u05e4\u05d5\u05e0\u05d9\u05dd"",

                            ""group_data_name"": ""g_353"",

                            ""group_id"": ""353"",

                            ""repeatable_group"": ""0"",

                            ""permissions"": {

                                ""type"": ""full"",

                                ""code"": ""1""

                            }

                        },

                        ""fields_data"": [

                            [

                                {

                                    ""field_name"": ""\u05e9\u05dd \u05e4\u05e8\u05d8\u05d9"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2372"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""\u05d0\u05e8\u05d9\u05d4"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05e9\u05dd \u05de\u05e9\u05e4\u05d7\u05d4"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2373"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""\u05de\u05e6\u05dc\u05d9\u05d7"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05d9\u05d9\u05e9\u05d5\u05d1 \u05de\u05d2\u05d5\u05e8\u05d9\u05dd"",

                                    ""field_type_name"": ""select-list"",

                                    ""field_data_name"": ""fld_2374"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""possible_values"": ""[\""\\u05db\\u05e4\\u05e8 \\u05e1\\u05d1\\u05d0\"",\""\\u05ea\\u05dc \\u05d0\\u05d1\\u05d9\\u05d1\"",\""\\u05e2\\u05d6\\u05d4\"",\""\\u05d9\\u05e8\\u05d5\\u05e9\\u05dc\\u05d9\\u05dd\""]"",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""alphabetical_order"": ""0""

                                    },

                                    ""value"": ""\u05e2\u05d6\u05d4"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05d8\u05dc\u05e4\u05d5\u05df"",

                                    ""field_type_name"": ""input-text"",

                                    ""field_data_name"": ""fld_2375"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0"",

                                        ""data_type"": ""0""

                                    },

                                    ""value"": ""055098393"",

                                    ""group_index"": 0

                                },

                                {

                                    ""field_name"": ""\u05de\u05d9\u05d9\u05dc"",

                                    ""field_type_name"": ""input-email"",

                                    ""field_data_name"": ""fld_2376"",

                                    ""placeholder"": null,

                                    ""default_value"": """",

                                    ""act_as_assign"": """",

                                    ""custom_validation"": {

                                        ""unable_to_edit"": ""0""

                                    },

                                    ""value"": ""arie@arma.co.il"",

                                    ""group_index"": 0

                                }

                            ]

                        ]

                    }

                ]

            },

            ""single_permission"": null

        }

    ]

}";

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

            Console.WriteLine("{0} version: {1}", typeof(JsonSerializer).Assembly.GetName().Name,  typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

        public static string GetNetCoreVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.Location.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​