public ActionResult SelectedDepartmentTeacher(int id)
{
List <Teacher> teachers = teacherBll.GetTeachers();
var selectedTeacher = teachers.FindAll(a => a.DepartmentId == id).ToList();
return(Json(selectedTeacher, JsonRequestBehavior.AllowGet));
}
public JsonResult IsEmailExist(string email)
{
List<Teacher> teachers = teacherBll.GetTeachers();
bool isExist = teachers.FirstOrDefault(u => u.Email.ToLowerInvariant().Equals(email.ToLower())) != null;
return Json(!isExist, JsonRequestBehavior.AllowGet);
}