C# Paypal integration windows application

[huhuhujujuju]

Ok, for better explanation i better describe a situation:
A user starts my program c# windows application
He fills out whatever information he has to and clicks a "donate" button
that makes his paypal account transfer the ammount specified to another paypal account specified by the program

Thats the program i want to create but i dont know how to connect paypal with may app

Any solutions, codes or programs you know that can accomplish this?

Thanks in advance :)

[huhuhujujuju]

OK i found the some code here:

http://www.dotnetspider.com/resources/20016-Sample-code-for-paypal-website-payment-pro-c.aspx

But it would be nice if someone could explain it to me :)

[vishal1082]

it looks like it is some paypal API?, normally these API's have well-built documentation for them, the code is though surprisingly easy to understand though its built on a website not WinForms.