using System;
using System.Collections.Generic;
using System.Net;
using System.Collections.Specialized;
using System.IO;

namespace sendSMS
  {
        class sendSMS
    {
            public string sendSMS()
        {
            String result;
            string apiKey = "your apiKey";
            string numbers = "923001234567,923211234567,923451234567"; // in a comma seperated list
            string message = "This is your message";
            string sender = "Jims Autos";
    
            String url = "https://www.hajanaone.com/api/sendsms.php?apikey=" + apiKey + "&phone=" + numbers + "&message=" + message + "&sender=" + sender;
            //refer to parameters to complete correct url string
    
            StreamWriter myWriter = null;
            HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(url);
    
            objRequest.Method = "POST";
            objRequest.ContentLength = Encoding.UTF8.GetByteCount(url);
            objRequest.ContentType = "application/x-www-form-urlencoded";
            try
    {
       myWriter = new StreamWriter(objRequest.GetRequestStream());
       myWriter.Write(url);
    }
          catch (Exception e)
        {
           return e.Message;
        }
           finally
        {
           myWriter.Close();
        }

    HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();
    using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
    {
        result = sr.ReadToEnd();
        // Close and clean up the StreamReader
        sr.Close();
    }
          return result;
        }
    }
}
                                                
                                           
                                        
                                    

                                        
                                        
                                            using System;
using System.Collections.Generic;
using System.Net;
using System.Collections.Specialized;

namespace sendSMS
{
    class sendSMS
    {
        public string sendSMS()
        {
            String message = HttpUtility.UrlEncode("This is your message");
            using (var wb = new WebClient())
            {
                byte[] response = wb.UploadValues("https://www.hajanaone.com/api/sendsms.php", new NameValueCollection()
                {
                {"apikey" , "yourapiKey"},
                {"phone" , "923331234567,923001234567,923451234567"},
                {"message" , message},
                {"sender" , "Jims Autos"}
                });
                string result = System.Text.Encoding.UTF8.GetString(response);
                return result;
            }
        }
    }
}