private void BtnAdd_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            BuyProduct product = new BuyProduct();

            product.Show();
            EntityProductOnStorage entityProduct = new EntityProductOnStorage();

            entityProduct.ReadProduct(tableForProducts);
        }
        private void BtnDelete_Click(object sender, EventArgs e)
        {
            this.Visible = false;
            SellProductForm sellProductForm = new SellProductForm();

            sellProductForm.Show();
            EntityProductOnStorage entityProduct = new EntityProductOnStorage();

            entityProduct.ReadProduct(tableForProducts);
        }
        private void ProductOnStorage_Load(object sender, EventArgs e)
        {
            EntityProductOnStorage product = new EntityProductOnStorage();

            product.ReadProduct(tableForProducts);
        }