public ActionResult Update([FromBody] Semister Semisterdata)
 {
     semisterRepo.Update(Semisterdata.SemisterId, Semisterdata, Semisterdata.SemisterName);
     return(Ok());
 }
 public ActionResult Add([FromBody] Semister Semisterdata)
 {
     semisterRepo.Add(Semisterdata);
     return(Ok());
 }