using System;

using System.Net;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

​

public class Program

{

    public static void Main()

    {

​

        string credentials = "PUT_YOUR_API_KEY_HERE:";

        HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create("https://api.dialmycalls.com/2.0/account");

        request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(Encoding.UTF8.GetBytes(credentials)));

        request.PreAuthenticate = true;

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

​

    }

}