using System;

using System.Collections.Generic;

using System.Text.Json.Serialization;

using Newtonsoft.Json.Converters;

public class Program

{

    public static void Main()

    {

        string json = GetJson();

        var result = Newtonsoft.Json.JsonConvert.DeserializeObject<Root>(json, new IsoDateTimeConverter { DateTimeFormat = "yyyy-MM-dd HH:mm:ss" });

        Console.WriteLine(result.Order.CreatedAt);

    }

    private static string GetJson()

    {

        string json = @"{

    ""order"": {

        ""id"": ""29809"",

        ""external_id"": null,

        ""created_at"": ""2015-11-29T13:15:27+00:00"",

        ""type"": ""order"",

        ""status"": ""received"",

        ""deleted"": true,

        ""brand"": ""test"",

        ""billing_address"": {

            ""firstName"": ""First name"",

            ""lastName"": ""Last name"",

            ""company"": ""Company name"",

            ""address1"": ""Address line 1"",

            ""address2"": ""line 2"",

            ""city"": ""City name"",

            ""county"": ""County name"",

            ""postcode"": ""AB1 2CD"",

            ""country"": ""United Kingdom"",

            ""phone1"": ""123456789"",

            ""phone2"": """",

            ""vatNumber"": """"

        },

        ""shipping_address"": {

            ""firstName"": ""First name"",

            ""lastName"": ""Last name"",

            ""company"": ""Company name"",

            ""address1"": ""Address line 1"",

            ""address2"": ""line 2"",

            ""city"": ""City name"",

            ""county"": ""County name"",

            ""postcode"": ""AB1 2CD"",

            ""country"": ""United Kingdom"",

            ""phone1"": ""123456789"",

            ""phone2"": """"

        },

        ""items"": [

            {

                ""id"": ""41379"",

                ""pn"": ""11500"",

                ""external_id"": ""0"",

                ""title"": ""Sol's Imperial Heavy T-Shirt"",

                ""price"": ""10.96"",

                ""retailPrice"": ""12.00000"",

                ""quantity"": ""1"",

                ""mockups"": {

                    ""Front"": ""https://www.inkthreadable.co.uk/images/svg/85261/0-large.png""

                },

                ""designs"": {

                    ""Front"": ""https://www.inkthreadable.co.uk/images/svg/85261/0-design.png""

                }

            },

            {

                ""id"": ""41380"",

                ""pn"": ""11500"",

                ""external_id"": ""0"",

                ""title"": ""Sol's Imperial Heavy T-Shirt"",

                ""price"": ""10.96"",

                ""retailPrice"": ""12.00000"",

                ""quantity"": ""1"",

                ""mockups"": {

                    ""Front"": ""https://www.inkthreadable.co.uk/images/svg/85260/0-large.png""

                },

                ""designs"": {

                    ""Front"": ""https://www.inkthreadable.co.uk/images/svg/85260/0-design.png""

                }

            }

        ],

        ""summary"": {

            ""currency"": ""GBP"",

            ""subtotalPrice"": ""21.92"",

            ""shippingPrice"": ""5.16"",

            ""total"": ""27.08"",

            ""totalTax"": ""0.00""

        },

        ""shipping"": {

            ""shippingMethod"": ""UK Recorded Delivery"",

            ""trackingNumber"": """",

            ""shiped_at"": """"

        },

        ""payment"": {

            ""methodMethod"": ""Pay by Credit or Debit Card"",

            ""paid_at"": """"

        },

        ""fulfillments"": []

    }

}";

        return json;

    }

}

​

// Root myDeserializedClass = JsonSerializer.Deserialize<Root>(myJsonResponse);

    public class BillingAddress

    {

        [JsonPropertyName("firstName")]

        public string FirstName { get; set; }

​

        [JsonPropertyName("lastName")]

        public string LastName { get; set; }

​

        [JsonPropertyName("company")]

        public string Company { get; set; }

​

        [JsonPropertyName("address1")]

        public string Address1 { get; set; }

​

        [JsonPropertyName("address2")]

        public string Address2 { get; set; }

​

        [JsonPropertyName("city")]

        public string City { get; set; }

​

        [JsonPropertyName("county")]

        public string County { get; set; }

​

        [JsonPropertyName("postcode")]

        public string Postcode { get; set; }

​

        [JsonPropertyName("country")]

        public string Country { get; set; }

​

        [JsonPropertyName("phone1")]

        public string Phone1 { get; set; }

​

        [JsonPropertyName("phone2")]

        public string Phone2 { get; set; }

​

        [JsonPropertyName("vatNumber")]

        public string VatNumber { get; set; }

    }

​

    public class ShippingAddress

    {

        [JsonPropertyName("firstName")]

        public string FirstName { get; set; }

​

        [JsonPropertyName("lastName")]

        public string LastName { get; set; }

​

        [JsonPropertyName("company")]

        public string Company { get; set; }

​

        [JsonPropertyName("address1")]

        public string Address1 { get; set; }

​

        [JsonPropertyName("address2")]

        public string Address2 { get; set; }

​

        [JsonPropertyName("city")]

        public string City { get; set; }

​

        [JsonPropertyName("county")]

        public string County { get; set; }

​

        [JsonPropertyName("postcode")]

        public string Postcode { get; set; }

​

        [JsonPropertyName("country")]

        public string Country { get; set; }

​

        [JsonPropertyName("phone1")]

        public string Phone1 { get; set; }

​

        [JsonPropertyName("phone2")]

        public string Phone2 { get; set; }

    }

​

    public class Mockups

    {

        [JsonPropertyName("Front")]

        public string Front { get; set; }

    }

​

    public class Designs

    {

        [JsonPropertyName("Front")]

        public string Front { get; set; }

    }

​

    public class Item

    {

        [JsonPropertyName("id")]

        public string Id { get; set; }

​

        [JsonPropertyName("pn")]

        public string Pn { get; set; }

​

        [JsonPropertyName("external_id")]

        public string ExternalId { get; set; }

​

        [JsonPropertyName("title")]

        public string Title { get; set; }

​

        [JsonPropertyName("price")]

        public string Price { get; set; }

​

        [JsonPropertyName("retailPrice")]

        public string RetailPrice { get; set; }

​

        [JsonPropertyName("quantity")]

        public string Quantity { get; set; }

​

        [JsonPropertyName("mockups")]

        public Mockups Mockups { get; set; }

​

        [JsonPropertyName("designs")]

        public Designs Designs { get; set; }

    }

​

    public class Summary

    {

        [JsonPropertyName("currency")]

        public string Currency { get; set; }

​

        [JsonPropertyName("subtotalPrice")]

        public string SubtotalPrice { get; set; }

​

        [JsonPropertyName("shippingPrice")]

        public string ShippingPrice { get; set; }

​

        [JsonPropertyName("total")]

        public string Total { get; set; }

​

        [JsonPropertyName("totalTax")]

        public string TotalTax { get; set; }

    }

​

    public class Shipping

    {

        [JsonPropertyName("shippingMethod")]

        public string ShippingMethod { get; set; }

​

        [JsonPropertyName("trackingNumber")]

        public string TrackingNumber { get; set; }

​

        [JsonPropertyName("shiped_at")]

        public string ShipedAt { get; set; }

    }

​

    public class Payment

    {

        [JsonPropertyName("methodMethod")]

        public string MethodMethod { get; set; }

​

        [JsonPropertyName("paid_at")]

        public string PaidAt { get; set; }

    }

​

    public class Order

    {

        [JsonPropertyName("id")]

        public string Id { get; set; }

​

        [JsonPropertyName("external_id")]

        public object ExternalId { get; set; }

​

        [JsonPropertyName("created_at")]

        public DateTime CreatedAt { get; set; }

​

        [JsonPropertyName("type")]

        public string Type { get; set; }

​

        [JsonPropertyName("status")]

        public string Status { get; set; }

​

        [JsonPropertyName("deleted")]

        public bool Deleted { get; set; }

​

        [JsonPropertyName("brand")]

        public string Brand { get; set; }

​

        [JsonPropertyName("billing_address")]

        public BillingAddress BillingAddress { get; set; }

​

        [JsonPropertyName("shipping_address")]

        public ShippingAddress ShippingAddress { get; set; }

​

        [JsonPropertyName("items")]

        public List<Item> Items { get; set; }

​

        [JsonPropertyName("summary")]

        public Summary Summary { get; set; }

​

        [JsonPropertyName("shipping")]

        public Shipping Shipping { get; set; }

​

        [JsonPropertyName("payment")]

        public Payment Payment { get; set; }

​

        [JsonPropertyName("fulfillments")]

        public List<object> Fulfillments { get; set; }

    }

​

    public class Root

    {

        [JsonPropertyName("order")]

        public Order Order { get; set; }

    }

​

​