Data Serializer Sample

DataSerializerSample.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.Serialization.Json;
using System.Text;

namespace Sample
{
    public static class DataSerializerSample
    {
        public static SampleClass Load()
        {
            var l = new SampleClass();
            if (!File.Exists(GetDataFilePath()))
            {
                return l;
            }

            string json;
            using (System.IO.StreamReader file = new System.IO.StreamReader(GetDataFilePath(), Encoding.UTF8))
            {
                json = file.ReadToEnd();
            }

            MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(json));
            DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(SampleClass));

            l = ser.ReadObject(ms) as SampleClass;
            ms.Close();

            return l;
        }

        public static void Save(SampleClass list)
        {
            // ファイルが無い場合は空ファイルを作成します。
            if (!File.Exists(GetDataFilePath()))
            {
                GetDataFilePath();
            }

            byte[] json;

            using (MemoryStream ms = new MemoryStream())
            {
                DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(SampleClass));
                ser.WriteObject(ms, list);
                json = ms.ToArray();
            }

            using (System.IO.StreamWriter file = new System.IO.StreamWriter(GetDataFilePath()))
            {
                file.WriteLine(Encoding.UTF8.GetString(json, 0, json.Length));
            }
        }

        private static string GetDataFilePath()
        {
            var exePath = System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location);
            return Path.Combine(exePath, "__DATA__.json");
        }

        private static void CreateEmptyDataFile()
        {
            File.Create(GetDataFilePath());
        }
    }
}