public void GetDataFromRestService()
    {
        string userName = "gopal@cctspl.com";
        string password = "gopal@cctspl.com";
        var request = HttpWebRequest.Create("http://cloudapps.cctspl.com/_vti_bin/authentication.asmx");
        //SetBasicAuthHeader(request, "gopal@cctspl.com", "gopal@cctspl.com");
        string authInfo = userName + ":" + password;
        authInfo = Convert.ToBase64String(Encoding.UTF8.GetBytes(authInfo));
        request.Headers["Authorization"] = "Basic " + authInfo;
        request.ContentType = "application/json";
        request.Method = "GET";
        using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)
        {
            Log.Debug("Status Code :", "" + response.StatusCode);
            RunOnUiThread(() =>
            { txtStatus.Text = response.StatusCode.ToString();
            });
            if (response.StatusCode != HttpStatusCode.OK)
            {
                Console.Out.WriteLine("ERROR: Server status code: {0}", response.StatusCode);
            }
            using (StreamReader reader = new StreamReader(response.GetResponseStream()))
            {
                var content = reader.ReadToEnd();
                if (string.IsNullOrWhiteSpace(content))
                {
                    Console.Out.WriteLine("ERROR: Empty response.");
                }
                else
                {
                    Console.Out.WriteLine("Response: {0}", content);
                }
            }
        }
    }