How to provide context to BlocProvider.of without using BlocBuilder in flutter bloc

Question

This is my BlocProvider portion of code:

late BuildContext _context;
@override
  Widget build(BuildContext context) {
    final _formKey = GlobalKey<FormState>();

    return BlocProvider<AccountBloc>(
      create: (context) {
        _context = context;
        return AccountBloc();
      },
      child: Scaffold(

And inside the onPressed I use this.context:

BlocProvider.of<AccountBloc>(this._context)..add(AddAccountEvent(account: account));

When I run it the error says:

LateInitializationError: Field '_context@30149156' has not been initialized.