public ActionResult PostAppointmentDecision(DoctorAppointmentModel model)
        {
            int aid = model.AppointmentId;

            using (ProjectEntities db = new ProjectEntities())
            {
                if (model.DoctorDecision != null)
                {
                    var    getdata = db.DoctorAppointments.SingleOrDefault(a => a.AppointmentId == aid);
                    string status  = getdata.AppointmentStatus;
                    if (status == "Requested")
                    {
                        db.UpdateAppointmentStatus(model.AppointmentId, model.DoctorDecision);

                        return(Json("Appointment Status Updated"));
                    }
                    else
                    {
                        return(Json("Decision Already Taken"));
                    }
                }
                else
                {
                    return(Json("Choose Your Decision Wisely"));
                }
            }
        }