AuthorizeNet.Core 8.1.0

AuthorizeNet.Core

A modern .NET client for the Authorize.Net payment gateway REST/XML API.

AuthorizeNet.Core is a multi-targeted build of the Authorize.Net SDK that ships the AuthorizeNet assembly, letting you authorize and capture card payments, manage customer profiles, run recurring (ARB) subscriptions, and query transaction and batch details from any current .NET application.

Supported frameworks

Multi-targets:

• .NET 8.0 (net8.0)
• .NET 9.0 (net9.0)
• .NET 10.0 (net10.0)

Installation

Install the package from NuGet:

dotnet add package AuthorizeNet.Core

Or from the Package Manager Console:

Install-Package AuthorizeNet.Core

Package id: AuthorizeNet.Core — assembly name: AuthorizeNet.

Getting started

Set your merchant credentials and target environment, then execute a request through its controller. Use Environment.SANDBOX for testing and Environment.PRODUCTION for live transactions.

using AuthorizeNet;
using AuthorizeNet.Api.Contracts.V1;
using AuthorizeNet.Api.Controllers;
using AuthorizeNet.Api.Controllers.Bases;

// 1. Select the environment
ApiOperationBase<ANetApiRequest, ANetApiResponse>.RunEnvironment = Environment.SANDBOX;

// 2. Provide merchant authentication (API Login ID + Transaction Key)
ApiOperationBase<ANetApiRequest, ANetApiResponse>.MerchantAuthentication =
    new merchantAuthenticationType
    {
        name = "YOUR_API_LOGIN_ID",
        ItemElementName = ItemChoiceType.transactionKey,
        Item = "YOUR_TRANSACTION_KEY"
    };

// 3. Build the payment
var creditCard = new creditCardType
{
    cardNumber = "4111111111111111",
    expirationDate = "1228",
    cardCode = "123"
};

var transactionRequest = new transactionRequestType
{
    transactionType = transactionTypeEnum.authCaptureTransaction.ToString(),
    amount = 19.95m,
    payment = new paymentType { Item = creditCard }
};

// 4. Execute
var request = new createTransactionRequest { transactionRequest = transactionRequest };
var controller = new createTransactionController(request);
controller.Execute();

createTransactionResponse response = controller.GetApiResponse();

if (response?.messages.resultCode == messageTypeEnum.Ok)
{
    Console.WriteLine($"Transaction ID: {response.transactionResponse.transId}");
}

Do not commit real credentials to source control; read the API Login ID and Transaction Key from configuration or environment variables at runtime.

Features

• Payment transactions (authorize, capture, refund, void) via createTransactionController
• Customer profiles and payment profiles (CIM)
• Automated Recurring Billing (ARB) subscriptions
• Transaction, batch, and settled-batch reporting
• Hosted payment and hosted profile page requests
• Sandbox and production environment switching

License

Licensed under the MIT License.