using System;

using Newtonsoft.Json.Linq;

​

namespace ConsoleApp1

{

    public class Program

    {

        public static void Main(string[] args)

        {

            JObject o1 = JObject.Parse(@"{

                                          'FirstName': 'John',

                                          'LastName': 'Smith',

                                          'Enabled': false,

                                          'Roles': [ 'User' ],

                                          'deep':{

                                                    'deepA': 123,

                                                    'deepB': 'zxc',

                                                    'deepC':{

                                                        'deepD': 0,

                                                        'deepE': '000'

                                                     }

                                                 }

                                        }");

            JObject o2 = JObject.Parse(@"{

                                          'Enabled': true,

                                          'Roles': [ 'User', 'Admin' ],

                                          'qwerty': [ 'qwe', 'Ad3e4rmin' ],

                                          'deep':{

                                                    'deepA': 'abc',

                                                    'deepC':{

                                                        'deepE': '111'

                                                     }

                                                 }

                                        }");

​

​

            RecursiveReplace(o1, o2);

​

            Console.WriteLine(o1.ToString());

        }

​

        private static void RecursiveReplace(JToken t1, JToken t2)

        {

            foreach (var item in t1.Children())

            {

                if (item.HasValues && item is JProperty &&(((JProperty)item).Value.Type == JTokenType.Property || ((JProperty)item).Value.Type == JTokenType.Object))

                {

                    RecursiveReplace(item, t2);

                }

                else if (item.HasValues && item is JObject)

                {

                    RecursiveReplace(item, t2);

                }

                else if (item is JProperty && (!((JProperty)item).Value.HasValues || ((JProperty)item).Value.Type == JTokenType.Array))

                {

                    var val = t2[item.Path] ?? t2.SelectToken(item.Path);

                    if (val != null)

                    {

                        t1[((JProperty)item).Name].Replace(val);

                    }

                }

            }

        }

    }

}