HTTP Send SMS API Using Windows Phone 8 - C#

try

{

    string strResult = "";
    //Prepare you post parameters

    var postValues = new List<KeyValuePair<string, string>>();
    //Your authentication key

    postValues.Add(new KeyValuePair<string, string>("authkey", "YourAuthKey"));
    //Multiple mobiles numbers separated by comma

    postValues.Add(new KeyValuePair<string, string>("mobiles", "9999999"));
    //Sender ID,While using route4 sender id should be 6 characters long.

    postValues.Add(new KeyValuePair<string, string>("sender", "102234"));
    //Your message to send, Add URL encoding here.

    string message = HttpUtility.UrlEncode("Test message");

    postValues.Add(new KeyValuePair<string, string>("message", message));
    //Select route

    postValues.Add(new KeyValuePair<string, string>("route","default"));
    

    //Prepare API to send SMS

    Uri requesturl = new Uri("http://api.msg91.com/api/sendhttp.php");
    //create httpclient request

    var httpClient = new HttpClient();

    var httpContent = new HttpRequestMessage(HttpMethod.Post, requesturl);
    httpContent.Headers.ExpectContinue = false;
    httpContent.Content = new FormUrlEncodedContent(postValues);
    HttpResponseMessage response = await httpClient.SendAsync(httpContent);
    

    //Get response

    var result = await response.Content.ReadAsStringAsync();
    strResult = result.ToString();
    response.Dispose();

    httpClient.Dispose();

    httpContent.Dispose();

}

catch (Exception ex)

{

	throw ex;

}