public void UpdateSumCart(List <BLProduct> productsCart)
{
int[] productAmounts = (int[])Session["productAmount"];
int numOfProducts = BLProduct.SumArr(productAmounts);
NumOfProducts.Text = "Num Of Products-" + numOfProducts;
double totalPrice = BLProduct.TotalPrice(productsCart, productAmounts);
TotalPrice.Text = "Total Price-" + totalPrice;
}