Send Sendgrid Dynamic Transactional Template email from dotnetcore

Program.cs

using System;
using Newtonsoft.Json;
using SendGrid;
using SendGrid.Helpers.Mail;

namespace dotnet_sendgrid
{
    class Program
    {
        static void Main(string[] args)
        {
            var sendGridClient = new SendGridClient("MY_API_KEY");

            var sendGridMessage = new SendGridMessage();
            sendGridMessage.SetFrom("vfabing@live.com", "Vivien FABING");
            sendGridMessage.AddTo("usertest2019@yopmail.com", "user test");
            sendGridMessage.SetTemplateId("MY_TEMPLATE_ID");
            sendGridMessage.SetTemplateData(new HelloEmail
            {
                Name = "Vivien",
                Url = "https://www.vivienfabing.com"
            });

            var response = sendGridClient.SendEmailAsync(sendGridMessage).Result;
            if (response.StatusCode == System.Net.HttpStatusCode.Accepted)
            {
                Console.WriteLine("Email sent");
            }
        }

        private class HelloEmail
        {
            [JsonProperty("name")]
            public string Name { get; set; }

            [JsonProperty("url")]
            public string Url { get; set; }
        }
    }
}