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 Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

    // https://stackoverflow.com/questions/47529655/change-key-name-of-data-loaded-through-jsonextensiondata/47539562#47539562

​

​

    public class EntityProperty

    {

        public string Name { get; set; }

​

        [JsonExtensionData]

        public IDictionary<string, JToken> OtherProperties { get; set; }

​

        public string Type { get; set; }

    }

​

    public class RootObject

    {

        public List<EntityProperty> Properties { get; set; }

    }

​

    public class PropertyNameMappingJsonReader : JsonTextReader

    {

        readonly Func<string, string> nameMapper;

​

        public PropertyNameMappingJsonReader(TextReader textReader, Func<string, string> nameMapper)

            : base(textReader)

        {

            if (nameMapper == null)

                throw new ArgumentNullException();

            this.nameMapper = nameMapper;

        }

​

        public override object Value

        {

            get

            {

                if (TokenType == JsonToken.PropertyName)

                    return nameMapper((string)base.Value);

                return base.Value;

            }

        }

    }

​

    public static class JsonExtensions

    {

        public static T DeserializeObject<T>(string json, Func<string, string> nameMapper, JsonSerializerSettings settings = null)

        {

            using (var textReader = new StringReader(json))

            using (var jsonReader = new PropertyNameMappingJsonReader(textReader, nameMapper))

            {

                return JsonSerializer.CreateDefault(settings).Deserialize<T>(jsonReader);

            }

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var json = GetJson();

​

            var root = JsonExtensions.DeserializeObject<RootObject>(json, (s) => s.Replace(".", ""));

​

            var outputJson = JsonConvert.SerializeObject(root, Formatting.Indented);

​

            Console.WriteLine(outputJson);

​

            Assert.IsTrue(!((JContainer)JToken.Parse(outputJson)).DescendantsAndSelf().OfType<JProperty>().Any(p => p.Name.Contains(".")));

​

            Console.WriteLine("Done.");

        }

​

        static string GetJson()

        {

            var json = @"{

    ""Properties"": [{

        ""Type"": ""A"",

        ""Name"": ""aaa"",

        ""lorem.ipsum"": 7.1

    }, {

        ""Type"": ""B"",

        ""Name"": ""bbb"",

        ""sit.amet"": ""XYZ""

    }, {

        ""Type"": ""C"",

        ""Name"": ""ccc"",

        ""a.b.c.d"": false

    }]

}";

            return json;

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: " + Environment.Version);

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

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

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​

    public class AssertionFailedException : System.Exception

    {

        public AssertionFailedException() : base() { }

​

        public AssertionFailedException(string s) : base(s) { }

    }

​

    public static class Assert

    {

        public static void IsTrue(bool value)

        {

            IsTrue(value, "failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message ?? "failed");

        }

    }

​