private void GetPurchasesInCart(string userId)
{
PurchaseModel purchase = new PurchaseModel();
decimal subTotal = 0;
List <Purchase> purchaseList = purchase.getOrdersInCart(userId);
CreateShopTable(purchaseList, out subTotal);
decimal vat = subTotal * 0.21m;
decimal totalAmount = subTotal + vat + 15;
litTotal.Text = "£" + subTotal;
LitVat.Text = "£" + vat;
LitTotalAmount.Text = "£ " + totalAmount;
}
