Get result from command handler

 public interface IHasResultCommand
    {
        Action SetResult { get; set; }
    }


    public class AddCategoryCommand : IHasResultCommand
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public string Description { get; set; }
        public Action SetResult { get; set; } = () => { };
    }

    public class Category
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

    public class AddCategoryCommandHandler : ICommandHandler<AddCategoryCommand>
    {

        public void Handle(AddCategoryCommand command)
        {
            var cat = new Category
            {
                Name = command.Name
            };

            //ctx.Categories.Add(cat)

            command.SetResult = () =>
            {
                command.Id = cat.Id;
            };
        }
    }


    public class HasResultCommandHandlerDecorator<TCommand> : ICommandHandler<TCommand>
    {
        ICommandHandler<TCommand> _handler;

        public HasResultCommandHandlerDecorator(ICommandHandler<TCommand> handler)
        {
            _handler = handler;
        }

        public void Handle(TCommand command)
        {
            _handler.Handle(command);

            if(command is IHasResultCommand cmd)
            {
                cmd.SetResult();
            }

        }
    }


container.RegisterDecorator(
    typeof(ICommandHandler<>),
    typeof(TransactionCommandHandlerDecorator<>));

container.RegisterDecorator(
    typeof(ICommandHandler<>),
    typeof(HasResultCommandHandlerDecorator<>));