How do I integrate paypal into asp.net?
First take a look at the documentation provided at https://www.paypal.com/developer
You will also want to set up a sandbox account at: https://developer.paypal.com/
The first link provides a number of useful samples as well an an integration wizard. The sandbox allows you to test transactions in a safe and secure manner.
Apart from that, here is the link to the SDK's for all languages including ASP.net
Hope that helps.
here's an example 'Use of the PayPal payment system in ASP.NET'
You must use The Paypal ASP.NET SDK
Before the SDK can be used, it must know the profile of the user accessing its services. A profile is a collection of information about a merchant or developer who uses the PayPal SDK. An API profile is associated with API Services and includes:
A PayPal API username and password.
If you are using API certificates, the path to the API certificate in P12 format and the private key password to that certificate. If you are using API signatures, the signature string.The optional name of a third-party who authorizes the caller to invoke PayPal APIs on his behalf. This third-party is called a subject.
The PayPal environment for processing API calls: live or sandbox. An EWP profile is associated with EWP Services includes:
The path to the merchant’s local copy of that public certificate
The private key password for that public certificate
The path to a merchant’s private key file for digitally signing data
The URL to which the button form POSTs
The optional URL of a payment button image. The default is PayPal’s standard Buy Now button.
Tutorials
Using the PayPal Payment System in ASP.NET
Integrating PayPal Payments into E-Commerce Applications with ASP.NET
Bye.
You may try ASP.NET PayPal Control for Website Payments Standard offered by SpiceLogic. Here is the link:
http://www.spicelogic.com/Products/ASP-NET-PayPal-Control-for-Website-Payments-Standard-4