C#:
HTTP-pyynnön lähettäminen perusautentikoinnilla

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

public class BasicAuthExample
{
    private static async Task Main()
    {
        string username = "kayttaja";
        string password = "salasana";
        string url = "https://example.com/api/data";

        using (HttpClient client = new HttpClient())
        {
            // Encode the credentials and set the basic auth header
            var encoding = Encoding.UTF8.GetBytes($"{username}:{password}");
            var base64String = Convert.ToBase64String(encoding);
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", base64String);

            try
            {
                HttpResponseMessage response = await client.GetAsync(url);
                response.EnsureSuccessStatusCode();
                string responseBody = await response.Content.ReadAsStringAsync();
                Console.WriteLine(responseBody);
            }
            catch (HttpRequestException e)
            {
                Console.WriteLine("\nException Caught!");
                Console.WriteLine($"Message :{e.Message}");
            }
        }
    }
}