public ActionResult Change(string predoctor_ID, string doctor_ID, string doctor_name, string doctor_dept,
string doctor_position, float salary, int age, string sex, int is_arranged)
{
DoctorService d = new DoctorService();
var res = d.ChangeDoctorByID(predoctor_ID, doctor_ID, doctor_name, doctor_dept, doctor_position, salary, age, sex, is_arranged);
return(Json(res, JsonRequestBehavior.AllowGet));
}