using System;

using Iyzipay;

using System.Collections.Generic;

using Iyzipay.Model;

using Iyzipay.Request;

using Iyzipay.Model.V2;

using Iyzipay.Model.V2.Subscription;

using Iyzipay.Request.V2.Subscription;

​

public class Program

{

    public static void Main()

    {

​

       Options options = new Options();

       options.ApiKey = "sandbox-t1lWRrN28GGhrKzAPOVwCJcU1LMafLab";

       options.SecretKey = "sandbox-yi3WsZlLT2gXwlBZ4mHNlq8zgOJ1McpG";

       options.BaseUrl = "https://sandbox-api.iyzipay.com";

           UpgradeSubscriptionRequest request = new UpgradeSubscriptionRequest 

            {

            Locale = Locale.TR.ToString(),

            ConversationId = "123456789",

            SubscriptionReferenceCode = "cf6df0fc-9dc2-4d1c-ad96-2f42b1cf372d",

            NewPricingPlanReferenceCode = "9cf7dd1f-ad3c-4c1e-8530-080b9fa65647",

            UseTrial = true,

            ResetRecurrenceCount = true,

            UpgradePeriod = SubscriptionUpgradePeriod.NOW.ToString()

            };

​

​

            IyzipayResourceV2 response = Subscription.Upgrade(request, options);

            Console.WriteLine(response.Status);

            Console.WriteLine(response.ErrorMessage);

            Console.WriteLine(response.StatusCode);

            Console.WriteLine(response.ConversationId);

​

    }

}

​