//@@@@@@@@ TOWARY @@@@@@@@@\\

        private void AddProductBtn_Click(object sender, EventArgs e)
        {
            using (var addform = new AddEditTowarForm(null))
            {
                if (addform.ShowDialog() == DialogResult.Yes)
                {
                    GridFiller.FillProductsGrid(ProductsGrid);
                }
            }
        }
 private void EditProductBtn_Click(object sender, EventArgs e)
 {
     try
     {
         using (var addform = new AddEditTowarForm((Towary)ProductsGrid.CurrentRow.DataBoundItem))
         {
             if (addform.ShowDialog() == DialogResult.Yes)
             {
                 GridFiller.FillProductsGrid(ProductsGrid);
             }
         }
     }
     catch (NullReferenceException exception)
     {
         MessageBox.Show(exception.Message, "Błąd", MessageBoxButtons.OK);
     }
 }