public ActionResult Delete_post(STUDENTS studentDelete)
        {
            if (Session["matricn"] != null && Session["passw"] != null)
            {
                STUDENTCONTEXT st = new STUDENTCONTEXT();
                st.DeleteStuedent(studentDelete);

                return(RedirectToAction("Deletelist", "admin"));
            }
            return(RedirectToAction("Login", "admin"));
        }