private void ShowMothReport(object sender, RoutedEventArgs e)
{
_items = _itemReader.ReadItems();
_userItemsMonth = _services.ShowMothReport(_items);
balanceMonth.Content = "Month Balance = " + _services.DispalyBalanceMonth(_items) + Environment.NewLine;
monthReportTable.ItemsSource = _userItemsMonth;
comboBoxColumnMonth.ItemsSource = Enum.GetValues(typeof(ItemType));
}