$('#txtApprovedEmails').keypress(function () {

                alert("here ajax method");

                $.ajax({

                    type: "GET",

                    dataType: "json",

                    url: 'selectemployees.aspx/GetEmployees',

                    async: false,

                    contentType: "application/json; charset=utf-8",

                    success: function () {

                        debugger;

                        alert("success");

                    }

                });

            });

 [WebMethod(EnableSession = false)]

        public static void GetEmployees()

        {

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(" https://api.dovico.com/Employees/?version=5") as HttpWebRequest; ;

            string strHeader = ("WRAP access_token=\"client=2d579b88a6940d78d7b5036fc4b5f6a\"");

            request.Headers["Authorization"] = strHeader;

            request.Method = "GET";

            request.Accept = "text/xml";

            request.ContentType = "application/xml; charset=utf-8";

            request.ContentLength = 0;

            Encoding enc = System.Text.Encoding.GetEncoding("utf-8");

            var encoding = new UTF8Encoding();

            string str = "<UserInfo><CompanyName>mj</CompanyName><UserName>mj</UserName><Password>mj</Password></UserInfo>";

            var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(str);

            request.ContentLength = bytes.Length;

            using (var writeStream = request.GetRequestStream())

            {

                StreamWriter swWriter = new StreamWriter(writeStream);

                writeStream.Write(bytes, 0, bytes.Length);

            }

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

            Stream strResponse = hwrResponse.GetResponseStream();

            StreamReader srReader = new StreamReader(strResponse);

            DataSet ds = new DataSet();

          //  ds = (DataSet)(srReader.ReadToEnd());

            string RequestResult = srReader.ReadToEnd();

            srReader.Close();

            strResponse.Close();

            hwrResponse.Close();

        }