func deleteData(id:String){ } } This is delete function class SecondViewController: UIViewController,UITableViewDelegate,UITableViewDataSource { var array = [DictionaryString,String]() super.viewDidLoad() self.tableview.delegate = self self.tableview.dataSource = self array = DataHandler.sharedInstance.fetch() } func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) - Int { return array.count } func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) - UITableViewCell { let obj = array[indexPath.row] let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TableViewCell cell.usernameLabel.text = obj["username"] cell.emailLabel.text = obj["email"] cell.passwordLabel.text = obj["password"] cell.updateBtn.addTarget(self, action: #selector(didTapUpdateBtn(sender:)), for: .touchUpInside) cell.updateBtn.tag = indexPath.row return cell } @objc func didTapUpdateBtn(sender:UIButton) { let obj = array[sender.tag] let sb = UIStoryboard.init(name: "Main", bundle: nil) let vc = sb.instantiateViewController(identifier: "update") as! UpdateViewController vc.obj = obj self.present(vc, animated: true, completion: nil) } This is tableview controller class TableViewCell: UITableViewCell { @IBOutlet weak var usernameLabel: UILabel! @IBOutlet weak var emailLabel: UILabel! @IBOutlet weak var passwordLabel: UILabel! @IBOutlet weak var idLabel: UILabel! @IBOutlet weak var updateBtn: UIButton! @IBOutlet weak var deleteBtn: UIButton! override func awakeFromNib() { super.awakeFromNib() // Initialization code } override func setSelected(_ selected: Bool, animated: Bool) { super.setSelected(selected, animated: animated) // Configure the view for the selected state } This is table view cell I am performing crud operation with core data.I have performed 3 operation successful which is working fine but in delete operation we have no need to navigate another controller just click on button action will be performed.I am so confused how to do it i have tried so many method.