public ActionResult Edit(Student Student)
{
if (ModelState.IsValid)
{
var studentList = _StudentBLL.GetAll().TableList;
var OldStd = studentList.Exists(s => s.StudentName == Student.StudentName && s.StudentId != Student.StudentId);
if (OldStd)
{
ModelState.AddModelError(string.Empty, "Student Name already exists.");
return(View());
}
else
{
if (Student.StudentId == 0)
{
Student = _StudentBLL.Add(Student.StudentName);
}
else
{
_StudentBLL.Edit(Student);
}
}
}
return(RedirectToAction("Index"));
}