asp.net vb.net shopping cart and c#

http://www.dotnetheaven.com/Uploadfile/munnamax/ShoppingCart02102006010016AM/ShoppingCart.aspx

c# http://www.codeproject.com/aspnet/ShoppingCartCSharp.asp

Payment Gateway:
http://www.vbdotnetheaven.com/UploadFile/munnamax/PaymentGateway02152006022631AM/PaymentGateway.aspx

Drag and Drop Products to the Shopping Basket Using JavaScript
http://www.codeproject.com/aspnet/DragAndDropShopping.asp