using System;

using RestSharp;

​

namespace TimeTrex_Test_API

{

    class Program

    {

        static void Main(string[] args)

        {

​

​

            var client = new RestClient("https://demo.timetrex.com/next-release/api/json/api.php?Class=APIAuthentication&Method=registerAPIKey");

            client.Timeout = -1;

            var request = new RestRequest(Method.POST);

            request.AlwaysMultipartFormData = true;

            request.AddParameter("json", "{\"0\":\"demoadmin1\",\"1\":\"demo\"}");

            IRestResponse response = client.Execute(request);

            Console.WriteLine(response.Content);

        }

    }

}

​