public static ResultDTO CheckLogin(RequestDTO obj)
        {
            var result = new ResultDTO();

            if (string.IsNullOrEmpty(obj.SessionKey) && string.IsNullOrEmpty(obj.UserName))
            {
                result.StatusCode = ConvertErrorCodeToInt(RetCode.ECS0017);
                result.SetContentMsg();
            }
            try
            {
                CommonExtensions common = new CommonExtensions();
                return(common.CheckLogin(obj));
            }
            catch (Exception ex)
            {
                result.StatusCode = ConvertErrorCodeToInt(RetCode.ECS9999);
                result.Details    = "Call CheckLogin method error:" + ex.Message;
            }
            return(result);
        }