UIFIS/OUP/Services/FileService.cs

using Newtonsoft.Json;
using OUP.ForOUP;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OUP.Services
{
    class FileService
    {

        private readonly string PATH;

        public FileService(string path)
        {
            PATH = path;
        }
        public BindingList<Descriptions> LoadData()
        {

            var fileExists = File.Exists(PATH);
            if (!fileExists)
            {
                File.CreateText(PATH).Dispose();
                return new BindingList<Descriptions>();

            }
            using (var reader = File.OpenText(PATH))
            {
                var fileText = reader.ReadToEnd();
                return JsonConvert.DeserializeObject<BindingList<Descriptions>>(fileText);

            }
        }

        public void SaveData(object todoDataList)
        {
            using (StreamWriter writer = File.CreateText(PATH))
            {
                string output = JsonConvert.SerializeObject(todoDataList);
                    writer.Write(output);
            }

        }
    }
}