I need some help setting up the PayPal Sandbox.

What do I use for the Return Url when Auto Return is enabled?

When I save the configuration when Payment Data Transfer is enabled does the PDT ID display?

Return Url can be set in you pay pal account to be the link to send all users back to when they complete a check out. You can also set the return url by using the rm variable

in your form. This will override what you have in your profile. Note: the Auto return isn't quite auto. It requires the user to click a button to return to your site.

To anwser your question about the PDT, these are very common questions you are asking. Please visit paypal.com/pdt and there you will find, texhnical overview, and code samples.

Note: You have to have auto return enabled to use pdt.  Also, if you want to have paypal send a variable that uniquiely identifies the user to your site, you need to use the custom variable. What ever you post under that variable will be posted back to you.

I know how to set the Return Url but what do I set it to? Default.aspx or some other page?

 Set i too whatever you want. If you are not implementing PDT them most sites will do one of the following:

 1) return to the home page

  2) before checkout, submit the last url the user was at in the custom variable. Then have paypal send the user back to that url, so they can impulse buy more.

  If you are using PDT, then you need to read the link that I posted, cause it will strictly inform you, that when implementing PDT you must send the user to an invoice page that

  displays the information passed from the PDT about their completed purchase. This Invoice.aspx can be placed anywhere on your site.
 

What I am talking about here is getting the PayPal e-Commerce Starter up and running. I don't see an Invoice.aspx. Is there such a pre-built page in the starter kit?

Maybe it's time to go back and tell what I am trying to do and where I am at. I setup PayPal Sandbox accounts and I'm trying to work through the first transaction. I'm doing this in the Visual Studio.Net 2005 development environment.

Since I am in a development environment, it appears I cannot configure a Return Url since I am on localhost.

Here is where I am at now: I am redirected to the PayPal Sandbox where I log in using the Personal account I setup. I complete the transaction and get to the point where it says "Test, your order is now complete." and I click a button that says "Return to NickKA's Test Store".

When I click the button to return I am sent to http://localhost:65365/Commerce.Web/PayPal/PDTHandler.aspx?merchant_return_link=Return+to+NickKA%27s+Test+Store

Once redirected back I get the error: No TransactionID - Invalid

It appears this error is happening because "tx" and "cm" is not passed back in the QueryString.

Also, the PDT ID is configured with 4wscjERBD3ik_E7hmrqVaXHilJTCegrJ5FJogluERPo8H9ixPskOmFXuQK8, by default. Should this work the first time around without modifying this ID?

Hi all,

i am working with paypal for money transaction

i am sending the amount details , return url etc to the paypal after transaction   it is coming to my site i am showing the approved or declined details so far is ok.

at the last page of paypal site that shows u the "RETURN TO MERCHANT"  in that page view source there is details of transaction   i want to get the               "transaction id "  which is in hiidden   like txn_id  

i want to get the transaction id    can any one help me out

using express checkout,doexpresscheckout ,PDT  , IPN we can do this

but i tried hard    no use

can any one clearly give details how to do this

thanx in advance

vijay 

First, your Return URL (as you specify in your PayPal account) should be <<mysite>>/PayPal/IPNHandler.aspx or <<mysite>>/PayPal/PDTHandler.aspx. You can't use localhost, obviously, because PayPal doesn't know what your localhost is.

Request.Form["txn_id"].ToString()

Request.QueryString["tx"].ToString()

If you don't want to save it, just display it, (and you are using PDT) you can pass the transaction ID in the query string when the site redirects to Receipt.aspx.