private void Window_Loaded(object sender, RoutedEventArgs e)
{
_fileIOService = new FileIOService(PATH);
try
{
_todoDataList = _fileIOService.LoadDate();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
Close();
}
dgTodoList.ItemsSource = _todoDataList;
_todoDataList.ListChanged += _todoDataList_ListChanged;
}