using System.Net;

using System.IO;

string baseUrl ="https://url-of-smseagle/index.php/http_api/send_sms";

WebClient client = new WebClient();

client.QueryString.Add("access_token", "0005gOjCOlMH8F2BP8");

client.QueryString.Add("to", "1234567");

client.QueryString.Add("message", HttpUtility.UrlEncode("My message"));

client.Headers.Add("user-agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:16.0) Gecko/20100101 Firefox/16.0");

Stream receivedStream = client.OpenRead(baseUrl);

StreamReader reader = new StreamReader(receivedStream);

string result = reader.ReadToEnd();

receivedStream.Close();

reader.Close();

return result;