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how to create unique ID for a customer before directing him/her to paypal

Posted on 2011-09-29
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Last Modified: 2012-05-12
How can we create a unique ID for a customer before the customer is directed to paypal and retreving this ID if the payment is successful. I am usnig .net
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Question by:mmalik15
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by:Eyal
ID: 36818002
Guid.NewGuid();
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by:mmalik15
ID: 36818017
thanks for this. Can you give me an exmaple where we have passed a unique ID to paypal site and retreived it after the paypal payment
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Eyal earned 500 total points
ID: 36818120
pass it in the custom field (see page 116 in the attached file) integration-guide.pdf
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Author Comment

by:mmalik15
ID: 36818449
thanks for the comments
from the attached file I guess its the invoice variable i need to set but i m looking for an example how can  you set it at runtime in c# and retreive it
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Expert Comment

by:Eyal
ID: 36818480
I'm not sure invoice number is the field you need to use.

you have a field named custom
if you set it in the initial request you will get it after the transaction completes

I did it very long ago and don't remember exactly how to do it (I have used this document). to test in the sandbox there you can play with it as much as you want
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