using System;

using System.Linq;

using System.Collections.Generic;

using JsonFlatten; // https://www.nuget.org/packages/JsonFlatten

using Newtonsoft.Json.Linq;

​

public class Program

{

    public static void Main()

    {

        var json =

@"{

  ""trust"": {

    ""id"": 1955,

    ""entity_name"": ""Walters Multi-Member SIPP trust"",

    ""entity_type"": 3,

    ""staffgroup"": true,

    ""xpt_external_system_ref"": """",

    ""client_adviser"": 602,

    ""client_adviser_secondary"": 602,

    ""client_adviser_service"": 602,

    ""address"": [

      {

        ""type"": ""1"",

        ""block"": ""Kintyre House"",

        ""street_name"": ""205 West George Street"",

        ""suburb"": ""Glasgow"",

        ""state"": """",

        ""country"": ""UK"",

        ""preferred"": 1,

        ""postcode"": ""G2 2LW"",

        ""date_moved_in"": null,

        ""index"": 104684799,

        ""allow_associates"": false,

        ""allow_multiple_account_associates"": false

      }

    ],

    ""member"": [

      {

        ""id"": 123,

        ""dob"": {

          ""_type"": ""Date"",

          ""_val"": ""1985-05-20""

        },

        ""dod"": {

          ""_type"": ""Date"",

          ""_val"": ""2013-02-11""

        },

        ""first_name"": ""Prabhu"",

        ""middle_name"": """",

        ""has_nino"": true,

        ""last_name"": ""E"",

        ""marital_status"": ""15"",

        ""nino"": ""QQ123456C"",

        ""resident_status"": ""Permanent Resident"",

        ""salutation"": ""Prabhu"",

        ""sex"": ""1"",

        ""selected_retirement_date"": """",

        ""title"": ""1"",

        ""uk_domiciled"": 1,

        ""protected_allowance"": ""Individual Protection"",

        ""address"": [

          {

            ""type"": ""1"",

            ""block"": ""44"",

            ""street_name"": ""Baker Street"",

            ""suburb"": ""London"",

            ""state"": """",

            ""country"": ""UK"",

            ""preferred"": 1,

            ""postcode"": ""W1U 7AL"",

            ""date_moved_in"": null,

            ""index"": 104684799,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          }

        ],

        ""contacts"": [

          {

            ""type"": ""p1"",

            ""country_code"": ""Brazil"",

            ""value"": ""9885801109"",

            ""preferred"": 1,

            ""index"": 1738469925,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          },

          {

            ""type"": ""w1"",

            ""country_code"": """",

            ""value"": ""masterek.org"",

            ""preferred"": 1,

            ""index"": 1622225223,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          },

          {

            ""type"": ""mg"",

            ""country_code"": """",

            ""value"": ""prabhu@gmail.com"",

            ""preferred"": 1,

            ""index"": 993467801,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          },

          {

            ""type"": ""sk"",

            ""country_code"": """",

            ""value"": ""prabhu"",

            ""preferred"": 1,

            ""index"": 1441496144,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          },

          {

            ""type"": ""p5"",

            ""country_code"": ""India"",

            ""value"": ""9999999999"",

            ""preferred"": 0,

            ""index"": 161998700,

            ""allow_associates"": false,

            ""allow_multiple_account_associates"": false

          }

        ]

      }

    ]

  }

}";

        JObject jObj = JObject.Parse(json);

        // Flatten a JObject to a dictionary. 

        // You can also use: Dictionary<string, object> flattened = new Dictionary<string, object>(jObj.Flatten());

        var flattened = jObj.Flatten();     

        // Retrieve and cast an item from the dictionary

        //var date = flattened.Get<DateTime>("date");

        //WriteLine("\"date\" property: " + date);

        // Unflatten a dictionary to a JObject

        JObject unflattened = flattened.Unflatten();

        WriteLine("Original JObject is equal to unflattened dictionary: " + JToken.DeepEquals(jObj, unflattened)); // True

        // Update an entry

        //flattened.Set("date", date.AddDays(5));

        //WriteLine("Updated \"date\" property: " + flattened.Get<DateTime>("date")); // 1/1/2014 11:28:56 PM

        // Flattened JObject without any null or empty properties e.g. null, "", {}, or []

        var flattenedWithoutEmpty = jObj.Flatten(false);

        WriteLine("Original unflattened JObject without empty properties:\r\n" + flattenedWithoutEmpty.Unflatten().ToString());

        WriteLine("Original flattened JObject:\r\n" + ToDebugString(flattened));

        WriteLine("Original flattened JObject without empty properties:\r\n" + ToDebugString(flattenedWithoutEmpty));

        WriteLine("Original JObject & unflattened dic are equal: " + JToken.DeepEquals(unflattened, jObj));

    }

    public static Action<object> WriteLine = (msg) => Console.WriteLine("\r\n" + msg.ToString() + "\r\n");

​

    public static string ToDebugString<TKey, TValue>(IDictionary<TKey, TValue> dictionary)

    {

        return "{\r\n\t" + string.Join(",\r\n\t", dictionary.Select(kv => kv.Key + " = '" + kv.Value + "'").ToArray()) + "\r\n}";

    }

}