using System;

​

using System.Text;

​

using System.Net.Http;

​

​

public class Program

{

    public static void Main()

    {

            using (var httpClient = new HttpClient())

            {

                using (var request = new HttpRequestMessage(new HttpMethod("POST"), "http://gsep.daimler.com/rest/api/latest/issue/STM-10955"))

                {

                    var base64authorization = Convert.ToBase64String(Encoding.ASCII.GetBytes("yusyilm:Yusuf_han9658"));

                    request.Headers.TryAddWithoutValidation("Authorization", string.Format("{0}" ,base64authorization) ); 

​

                    var response = httpClient.PostAsync(request.ToString(), Encoding.ASCII.GetBytes("yusyilm:Yusuf_han9658")).Result;

                    //var response =  httpClient.SendAsync(request);

                    //var response = httpClient.SendAsync(request).ConfigureAwait(false);

                    Console.WriteLine(response.StatusCode);

                    //System.Diagnostics.Debug.WriteLine(response); 

                }

            }

    }

}