public IHttpActionResult GetUsers()
        {
            var appBlock = new SqlDbConnectionBaseClass();

            SqlParameter[] parameters =
            {
                new SqlParameter("@userName", SqlDbType.NVarChar)
                {
                    Value = ""
                },
                new SqlParameter("@password", SqlDbType.NVarChar)
                {
                    Value = ""
                }
            };
            var result   = appBlock.ExecuteProcedureForSelect("SpCheckUserLogin", parameters, "");
            var json     = JsonConvert.SerializeObject(result);
            var listData = JsonConvert.DeserializeObject <List <AuthenticateUserReturn> >(json);

            return(Ok(listData));
        }