Newtonsoft.Json/Src/Newtonsoft.Json.Tests/Documentation/Samples/Serializer/JsonConverterAttributeClass.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Newtonsoft.Json.Converters;

namespace Newtonsoft.Json.Tests.Documentation.Samples.Serializer
{
    public class JsonConverterAttributeClass
    {
        #region Types
        public class UserConverter : JsonConverter
        {
            public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
            {
                User user = (User)value;

                writer.WriteValue(user.UserName);
            }

            public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
            {
                User user = new User();
                user.UserName = (string)reader.Value;

                return user;
            }

            public override bool CanConvert(Type objectType)
            {
                return objectType == typeof(User);
            }
        }

        [JsonConverter(typeof(UserConverter))]
        public class User
        {
            public string UserName { get; set; }
        }
        #endregion

        public void Example()
        {
            #region Usage
            User user = new User
            {
                UserName = @"domain\username"
            };

            string json = JsonConvert.SerializeObject(user, Formatting.Indented);

            Console.WriteLine(json);
            // "domain\\username"
            #endregion
        }
    }
}