beachside-project

    public class Person
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public int Age { get; set; }
        public string[] Hobbies{ get; set; }

        public List<Phone> Phones { get; set; }

        public string FullName => $"{FirstName} {LastName}";

beachside-project

    //Jsonにインデントつけるには...　＋JsonSerializerSettingsでキャメルケース出力
    var shinobuJsonWithIndention = JsonConvert.SerializeObject(shinobu, Formatting.Indented, new JsonSerializerSettings()
    {
        ContractResolver = new CamelCasePropertyNamesContractResolver()
    });
    Console.WriteLine(shinobuJsonWithIndention);

beachside-project

public abstract class JsonSerializable
{
    private static readonly JsonSerializerSettings Settings = new JsonSerializerSettings
    {
        ContractResolver = new CamelCasePropertyNamesContractResolver()
    };

    public string ToJsonString() => JsonConvert.SerializeObject(this, Settings);
    public string ToJsonString(JsonSerializerSettings settings) => JsonConvert.SerializeObject(this, settings);

beachside-project

class Program
{
    static void Main(string[] args)
    {

        var shinobu = new Person()
        {
            FirstName = "shinobu",
            LastName = "oshino",
            Age = 598,

beachside-project

public class Person
{
    [JsonProperty(PropertyName = "firstName")]
    public string FirstName { get; set; }

    [JsonProperty(PropertyName = "lastName")]
    public string LastName { get; set; }

    [JsonProperty(PropertyName = "age")]
    public int Age { get; set; }

beachside-project

    public class SnakeCaseContractResolver : DefaultContractResolver
    {
        private const string SnakeDelimiter = "_";
        protected override IList<JsonProperty> CreateProperties(System.Type type, MemberSerialization memberSerialization)
            => base.CreateProperties(type, memberSerialization).Select(ConvertSnakeCasePropertyName).ToList();

        private static JsonProperty ConvertSnakeCasePropertyName(JsonProperty p)
        {
            var target = p.PropertyName;

beachside-project

var shinobu = new Person()
{
    FirstName = "shinobu",
    LastName = "oshino",
    Age = 598,
    Favorites = new[] { "golden chocolate", "pon de ring" },
    Phones = new List<Phone>()

    {
        new Phone() {PhoneNumber = "000-000-111",ModelName = "Lumia"},

beachside-project

public static class EnumerableExtension
{
    public static HashSet<T> ToHashSet<T>(this IEnumerable<T> source) => new HashSet<T>(source);
}

beachside-project

public static class EnumerableExtension
{
    public static bool ContainsDuplicate(this IEnumerable<string> source) => source.GroupBy(i => i).SelectMany(g => g.Skip(1)).Any();
}

beachside-project

using System;
using System.Collections.Generic;
using Microsoft.Bot.Builder.FormFlow;

namespace FormFlow1.Dialogs
{
    [Serializable]
    public class SandwichOrder
    {
        public SandwichOptions? Sandwich;