Use HttpClient Builder to obtain a HttpClient Object, which you can use to initialize the services. With the HttpClient already created and the BaseAddress you can create a service instance.

Nuvei offers 2 environments you can use to interact with our payment platform: Test and Live.

Alternative Payment Methods Test Entry Point: https://paytest.smart2pay.com
Alternative Payment Methods Live Entry Point: https://pay.smart2pay.com

Credit Cards Test Entry Point: https://securetest.smart2pay.com
Credit Cards Live Entry Point: https://secure.smart2pay.com

See below examples on how to create a credit card payment request and a payment request for an alternative payment method of your choice.

• You can create a credit card payment request by calling a function with the appropriate parameters given below:

  
  var baseAddress = new Uri("https://securetest.smart2pay.com");
  IHttpClientBuilder httpClientBuilder = new HttpClientBuilder(() => new AuthenticationConfiguration
  {
  	SiteId = 33258,
  	ApiKey = "JOPxYQftN9xICry9koMuER6L4SrszVHI8SLh9Q83n964tFa2GK"
  });
  var httpClient = httpClientBuilder.Build();
  var paymentService = new S2p.RestClient.Sdk.Services.CardPaymentService(httpClient, baseAddress);
  
  var paymentRequest = new CardPaymentRequest
  {
  	MerchantTransactionID = MerchantTransactionID,
  	Amount = 9000,
  	Currency = "USD",
  	ReturnURL = "http://demo.smart2pay.com/redirect.php",
  	Description = DescriptionText,
  	StatementDescriptor = "bank statement message",
  	Card = new CardDetailsRequest
  	{
  		HolderName = "John Doe",
  		Number = "4111111111111111",
  		ExpirationMonth = "02",
  		ExpirationYear = "2022",
  		RequireSecurityCode = false
  	},
  	BillingAddress = new Address
  	{
  		City = "Iasi",
  		ZipCode = "7000-49",
  		State = "Iasi",
  		Street = "Sf Lazar",
  		StreetNumber = "37",
  		HouseNumber = "5A",
  		HouseExtension = "-",
  		Country = "BR"
  	},
  	Capture = false,
  	Retry = false,
  	GenerateCreditCardToken = false,
  	PaymentTokenLifetime = 5
  }.ToApiCardPaymentRequest();
  
  var createPaymentResult = await paymentService.CreatePaymentAsync(paymentRequest);
  var createPaymentResponse = createPaymentResult.Value.Payment;
  

• You can create a payment request for an alternative payment method by calling a function with the appropriate parameters given below:

  
  var baseAddress = new Uri("https://paytest.smart2pay.com");
  IHttpClientBuilder httpClientBuilder = new HttpClientBuilder(() => new AuthenticationConfiguration
  {
  	SiteId = 45614,
          ApiKey = "rAwLLh3rQk3uNTOPHpqydrEOdAGsRzZChCd4uyXsXoGE2tkoYA"
  });
  var httpClient = httpClientBuilder.Build();
  var paymentService = new S2p.RestClient.Sdk.Services.AlternativePaymentService(httpClient, baseAddress);
  
  var paymentRequest = new AlternativePaymentRequest()
  {
  	MerchantTransactionID = MerchantTransactionID,
  	Amount = 11,
  	Currency = "CNY",
  	MethodID = 1066,
  	ReturnURL = "http://demo.smart2pay.com/redirect.php",
  	TokenLifetime = 10,
  	Customer = new Customer
  	{
  		Email = "john@doe.com"
  	},
  	BillingAddress = new Address
  	{
  		Country = "CN"
  	}
  }.ToApiAlternativePaymentRequest();
  
  var createPaymentResult = await paymentService.CreatePaymentAsync(paymentRequest);
  var createPaymentResponse = createPaymentResult.Value.Payment;
  

For a complete list of Integration Tests examples, please go to our section on Github: SDK .NET Integration Tests.