C# call web service using rest

Uri address = new Uri("http://test.tst.info/ecabinetapi/eCabinetAPI.asmx/generateeCabinetConfig");

                HttpWebRequest request = WebRequest.Create(address) as HttpWebRequest;
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
                StringBuilder data = new StringBuilder();
                byte[] byteData = UTF8Encoding.UTF8.GetBytes(Convert.ToString(data));
                request.ContentLength = byteData.Length;
                using (Stream postStream = request.GetRequestStream())
                {
                    postStream.Write(byteData, 0, byteData.Length);
                }

                request.Credentials = System.Net.CredentialCache.DefaultCredentials;
                string result = string.Empty;
                using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
                {
                    StreamReader reader = new StreamReader(response.GetResponseStream());
                    result = reader.ReadToEnd();
                }

asp.net access c# variable in javascript

1)  asp.net code behind
 public partial class UploadMultipleFiles : System.Web.UI.Page
    {
        public string eCabinetbaseURL = Functions.ToString(ConfigurationManager.AppSettings["eCabinetServiceUrl"]);

        protected void Page_Load(object sender, EventArgs e)
        {

        }
    }

2)  In Javascript function

 var eCabinetServiceUrl = '<%=eCabinetbaseURL%>';

C# Difference between ref and out parameters

http://www.dotnet-tricks.com/Tutorial/csharp/K0Hb060414-Difference-between-ref-and-out-parameters.html