public async Task <int> DeleteContact(string serviceUrl, int id)
        {
            //var contactData = JsonConvert.SerializeObject(contact);
            var response = _service.Delete(serviceUrl + "DeleteContact", Convert.ToString(id));
            var data     = await response.Result.Content.ReadAsStringAsync();

            var result = JsonConvert.DeserializeObject <int>(data);

            return(result);
        }