public async Task<IActionResult> Update(Guid? Id, Session session) { if (Id == null) { return NotFound(); } if (await _sessionService.checkSessionExist(session)) { return RedirectToAction("Update", new { id = Id, Message = MessageNote.Exist }); } var sessions = await _sessionService.getSessionById(Id); sessions.SessionName = session.SessionName; await _sessionService.updateSession(sessions); return RedirectToAction("Detail", new { id = Id, Message = MessageNote.Update }); }