calling API

using System;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Http;


namespace HTTP_Test
{
    class program
    {
        static void Main()
        {
            Task t = new Task(HTTP_GET);
            t.Start();
            Console.ReadLine();
        }

        static async void HTTP_GET()
        {
            var TARGETURL = "https://dev.azure.com/myOrganization/_apis/projects";


            Console.WriteLine("GET " + TARGETURL);

            HttpClient client = new HttpClient();

            var byteArray = Encoding.ASCII.GetBytes("api-token:ejgm6xtauplqrsei3bqa");
            client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Basic", Convert.ToBase64String(byteArray));

            HttpResponseMessage response = await client.GetAsync(TARGETURL);
            HttpContent content = response.Content;

            // ... Check Status Code
            Console.WriteLine("Response status code: " + (int)response.StatusCode);

            // ... Read the string.
            string result = await content.ReadAsStringAsync();

            // ... Display the result.
            if (result != null)
            {
                Console.WriteLine(result);
            }
        }
    }
}