UIFIS/OUP/OUP.xaml.cs

using OUP.ForOUP;
using OUP.Services;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace OUP
{
    /// <summary>
    /// Логика взаимодействия для OUP.xaml
    /// </summary>
    public partial class OUP : Window
    {
        private readonly string PATH = $"{Environment.CurrentDirectory}\\todoDataList";
        private BindingList<Descriptions> _todoDataList;
        private FileService _fileService;
        public OUP()
        {
            InitializeComponent();
        }

        

        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            _fileService = new FileService(PATH);
            try
            {
                _todoDataList = _fileService.LoadData();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
               Close();
            }
           
            Supply.ItemsSource = _todoDataList;
            _todoDataList.ListChanged += _todoDataList_ListChanged;
        }

        private void _todoDataList_ListChanged(object sender, ListChangedEventArgs e)
        {

            if (e.ListChangedType == ListChangedType.ItemAdded || e.ListChangedType == ListChangedType.ItemDeleted || e.ListChangedType == ListChangedType.ItemChanged)
            {
                try
                {
                    _fileService.SaveData(sender);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                    Close();
                }

            }
        }
    }
}