send-sms

using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Collections.Generic;
using System.Threading.Tasks;

namespace elktest {
  class Program {
    public static string user = "<API-Username>";
    public static string pwd = "<API-Password>";
    private static HttpClient client;
    static void Main(string[] args)
    {
      Task.Run(async() = > {
        using(client = new HttpClient()) {
          client.BaseAddress = new Uri("https://api.46elks.com");

          client.DefaultRequestHeaders.Authorization =
            new AuthenticationHeaderValue(
              "Basic",
              Convert.ToBase64String(
                System.Text.ASCIIEncoding.ASCII.GetBytes(
                  string.Format("{0}:{1}", user, pwd))));

          var content = new FormUrlEncodedContent(new[] {
            new KeyValuePair < string, string > ("from", "SharpElk"),
            new KeyValuePair < string, string > (
              "to", "+46735417172"),
            new KeyValuePair < string, string > (
              "message",
              "Test 😊 message to you!"),
          });

          HttpResponseMessage response = await client
            .PostAsync("/a1/SMS", content);
          response.EnsureSuccessStatusCode();
          var result = await response.Content.ReadAsStringAsync();
        }
      }).Wait();
    }
  }
}