private void ChangeNotificationButton() { button.Text = _message.Text; ButtonNotification ButtonTemp = db.GetButtonNotification(button); if (ButtonTemp == null) { db.SetValue(button); } ButtonAndTextNotication temp = db.GetButtonAndTextNotication(user); if (temp.Text != null) { Text += temp.Text.Text + "\n"; } Text += button.Text; db.SetValue(new CollectionButtonNotification() { buttonAndTextNotification = temp, buttonNotification = button }); db.Save(); }