How to rollback the database transaction when there is exception?

[raine93]

In my onPostAsync():

try {

Call _appService.UpdateAsync()
2. _appService.UpdateAsync do the validation check (using Check.Positive, etc) before calling the _repository.UpdateAsync (no try catch inside)
}
catch (Exception ex) {
//set notification message
notificationmessage = "Fail to update";
}

return RedirectToPage();

The Check.Positive() throw an exception which goes to my catch Exception, set my notificationmessage and redirect to my page. But the database is still being updated instead of rolling back.

I read from here: https://abp.io/docs/latest/framework/architecture/domain-driven-design/unit-of-work
if it does not throw exception, it will commit the transaction. But now that it hit my catch Exception and I am trying to return the error with my own notification, it still commit the transaction.

I try commented out the _repository.UpdateAsync() and it still can update the database (?).
I also try to disable the unit of work with this

Configure<AbpUnitOfWorkDefaultOptions>(options =>
{
    options.TransactionBehavior = UnitOfWorkTransactionBehavior.Disabled;
});

but it still does not work.

How do I make it follow my steps (eg. like if i commented out the _repository.UpdateAsync(), it should not do any update to database) and disable this current behaviour? Thanks.

[realLiangshiwei]

https://abp.io/docs/latest/framework/architecture/domain-driven-design/unit-of-work#the-current-unit-of-work

You can call rollback yourself.

await _unitOfWorkManager.Current.RollbackAsync();