public JsonResult Check_Existing_Quality_No(int quality_No)
        {
            bool check = false;

            try
            {
                check = _qualityMan.Check_Existing_Quality_No(quality_No);
            }
            catch (Exception ex)
            {
                Logger.Error("Quality Controller - Check_Existing_Quality_No " + ex.ToString());
            }

            return(Json(check, JsonRequestBehavior.AllowGet));
        }