public JsonResult ShowDoctorForSlot()
        {
            Models.Staffs         slotDoc = new Staffs();
            DataSet               ds      = slotDoc.GetDoctorForSlot();
            List <SelectListItem> docList = new List <SelectListItem>();

            foreach (DataRow dr in ds.Tables[0].Rows)
            {
                docList.Add(new SelectListItem {
                    Text = dr["STAFF_ID"].ToString() + " : Dr. " + dr["STAFF_NAME"].ToString() + " : " + dr["STAFF_QUALIFICATION"].ToString(), Value = dr["STAFF_ID"].ToString()
                });
            }

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