1. Redirect your user to Authorize.Net's hosted payment page using an iframe or by making a redirect request in your code, passing the necessary parameters like amount and transaction details.
2. After the user completes their payment on Authorize.Net's page, they will be redirected back to your site with a response containing information about the transaction status and details.
3. In your server-side code on your C# web application, handle this redirect request by reading the parameters from the query string or form data in the HTTP request.
4. Use Authorize.Net's API to validate and process this response, depending on your application requirements (for example, updating a database or displaying the transaction details).
5. Display appropriate feedback to your user based on the result of their payment (success/failure and any error messages, if necessary).
6. If you used an iframe for handling the redirect from Authorize.Net's hosted payment page to your server-side code, make sure to remove or hide it when you are done processing the response since users might be able to access unintended parts of your application within an iframe.
To get started, make sure you are familiar with the Authorize.Net API documentation and have registered for a merchant account on their website: https://developer.authorize.net/api-operation-guide/. You'll need to obtain an API login ID and transaction key for making requests from your C# application, as well as configure the necessary settings in your code.
Additionally, ensure that you are handling sensitive data securely and following best practices for storing user information to maintain PCI compliance with Authorize.Net's terms of service.
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