public IActionResult Create(StudentEditModelAdd model)
 {
     if (ModelState.IsValid)
     {
         var student = new Student();
         student.Name = model.Name;
         student      = _repositoryStudent.add(student);
         return(RedirectToAction(nameof(Details), new { id = student.id }));
     }
     else
     {
         return(View());
     }
 }
        public IActionResult upDate(int id)
        {
            var student = _repositoryStudent.GetStudentById(id);

            if (student == null)
            {
                return(RedirectToAction(nameof(Index)));
            }
            var studentViewModel = new StudentEditModelAdd()
            {
                Name = student.Name
            };

            return(View(studentViewModel));
        }
 public IActionResult upDate(int id, StudentEditModelAdd model)
 {
     if (ModelState.IsValid)
     {
         var student = _repositoryStudent.GetStudentById(id);
         if (student == null)
         {
             return(RedirectToAction(nameof(Index)));
         }
         student.Name = model.Name;
         _repositoryStudent.upDate(student);
         return(RedirectToAction(nameof(Details), new { student.id }));
     }
     else
     {
         return(RedirectToAction(nameof(Index)));
     }
 }