private void ViewCars_Click(object sender, RoutedEventArgs e)
        {
            StatsCalc SC = new StatsCalc(cn);

            try
            {
                InventoryGrid.ItemsSource = SC.CarsInventory().DefaultView;
            }
            catch (OleDbException ex)
            {
                ErrorWindow Error = new ErrorWindow(ex.Message);
                Error.ShowDialog();
            }
        }
        private void ViewCars_Click(object sender, RoutedEventArgs e)
        {
            StatsCalc SC = new StatsCalc(cn);

            try
            {
                InventoryGrid.ItemsSource = SC.CarsInventory().DefaultView;
            }
            catch (OleDbException ex)
            {
                ErrorWindow Error = new ErrorWindow(ex.Message);
                Error.ShowDialog();
            }
        }