Tìm kiếm công nhận các thông số chuỗi truy vấn sau đây: • Tìm kiếm xác định các chuỗi tìm kiếm được nhập bởi khách truy cập. • AllWords xác định xem có nên làm một từ tất cả hoặc tìm kiếm bất kỳ từ. Bạn tìm thấy giá trị của nó bằng cách kiểm tra , trong đó trả về | CHAPTER 9 CREATING A CUSTOM SHOPPING CART 329 create a new parameter DbParameter param @CartID shoppingCartId 36 param return the result table return comm Implementing the Presentation Tier Okay now that the foundation functionality is in place you can add the presentation tier bits. Building the user interface for the shopping cart functionality involves the following major steps Creating Add to Cart buttons refer to Figure 9-2 Showing shopping cart summary information in catalog pages refer to Figure 9-2 Creating the actual shopping cart page refer to Figure 9-1 Allowing the visitor to update product quantities in the shopping cart Implementing Continue Shopping functionality Let s deal with these tasks one by one. Creating the Add to Cart Buttons You can choose to have Add to Cart buttons only in the products details pages in the product listings or in both. Follow the steps in the following exercise to add your buttons. Exercise Creating the Add to Cart Buttons 1. If you implemented the PayPal shopping cart in Chapter 7 you now need to remove the PayPal Add to Cart buttons from . Open the file in HTML View and remove the following code a runat server id addToCartLink IMG src Images border 0 a Then remove the associated code from the PopulateControls method in Create the Add to Cart PayPal link string link JavaScript OpenPayPalWindow https 330 CHAPTER 9 CREATING A CUSTOM SHOPPING CART cgi-bin webscr cmd _cart open shopping cart command business youremail@ your PayPal account item_name product name amount 0 product price currency USD currency add 1 quantity to add to the shopping cart return return address cancel_return cancel return
