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TB1962 · January 23rd, 2009, 10:10 AM

Thanks for your brilliant book it's saved me hours of development work!

My question is to do with integrating with paypal. I was furnished with the following code
to use in my integration. This only sends up one amount. Does this mean I can only send the total amount up to paypal not the individual items in the shopping Cart?

Code:

ProtectedSub btnFinalize_Click(ByVal sender AsObject, ByVal e As System.EventArgs) Handles btnFinalize.Click
If Profile.ProfileCompleted = TrueThen
Try
Dim orderAmount AsDecimal = ShopManager.ShoppingCart.Total
Dim theCustomer As Customer = _
New Customer(CType(Membership.GetUser().ProviderUserKey, Guid), _
Profile.FirstName, Profile.LastName, Profile.Address.Street, _
Profile.Address.ZipCode, Profile.Address.City, Profile.Address.Country)
Dim orderId AsInteger = ShopManager.FinalizeOrder(theCustomer)
Dim redirect AsString = ""
redirect += "https://www.sandbox.paypal.com/xclick/[email protected]"
'redirect += "https://www.paypal.com/xclick/[email protected]"
redirect += "&item_name=t-shirt"
redirect += "&item_number=123"
redirect += "&amount=0.01"
redirect += "&currency=USD"
redirect += "&return=http://www.titchytwobar.co.uk/thankyou.aspx"
redirect += "&cancel_return=http://www.titchytwobar.co.uk/cancel.aspx"
' Redirect to the payment page
Response.Redirect(redirect)
'Response.Redirect("ThankYou.aspx?OrderNumber=" & _
'orderId.ToString() & "&Total=" & orderAmount.ToString("c"))
Catch ex As Exception
lblFailure.Visible = True
btnFinalize.Visible = False
EndTry
Else
Response.Redirect("~/UserDetails.aspx")

 
EndIf
EndSub

Imar · January 24th, 2009, 04:41 AM

Quote:

This only sends up one amount. Does this mean I can only send the total amount up to paypal not the individual items in the shopping Cart?

Yes, that's the case. If you think about it a bit, it does make sense.

PayPal is a *payment* system, not an *ordering* system. When people pay your bills by bank or cheque, you only receive the total amount and an order reference number. It's up to you to link the order / transfer number back to your own system so you can what order it belongs to.

The same is true with PayPal: the only thing PayPal is interested in is the total amount for the entire order. PayPal asks the visitor to transfer the entire amount and when it succeeds they add it your balance and update you on the status. They are not interested in (nor do they need to have) the individual parts of the order.

It's up to you to link a PayPal confirmation back to an order with its individual parts in your own system.

Hope this clarifies things a bit...

Imar

Old Pedant · January 24th, 2009, 06:10 PM

One thing I'd like to point out: You don't *HAVE* to use Response.Redirect to go to PayPal. You could, instead, use a POPUP window and use TARGET= to bring up PayPal in the popup. In the meantime, in the background, you can leave the full shopping cart order visible, with the total, so the user can correlate the PayPal amount with the cart. Then, when PayPal reloads the popup with either your cancel or return page, you can have those pages use JavaScript to update the main window and then close the popup.

I haven't tried it, but you might even be able to get PayPal to show in an <IFRAME> on your main page, to avoid the popup.

Anyway, the point is that you *can* make the whole thing a lot "friendlier" than the default mechanism that you have been given. What you have works fine, but it can be improved.

TB1962 · January 26th, 2009, 05:24 AM

Thanks for both your prompt replies, that makes sense. I will try out your suggestion for a pop up window.

Cheers!