Extensions 2.0 - How can I prevent OnValidate-Trigger in OnBeforeValidate?

elbartus

Hello,

just writing a little extensions for Dynamics NAV 2018.
And therefore I got the following question in that example:

I modify Name on Vendor-Table like

modify (Name)
{

trigger OnBeforeValidate();
begin
IF CONFIRM('Do you want to prevent/skip OnValidate?') THEN
// ????????? <- is there something I can call to prevent/skip the OnValidate-Trigger (Expect of ERROR or TESTFIELD)?
end;

}

I've already tried to call EXIT there, but that just leaves the OnBeforeValidate-Trigger an does not prevent OnValidate.

Do you have an idea?

Thanks

El Bartus

Slawek_Guzek

You can't. That's the 'beauty' of Extensions - you can only add to existing code.

On the other hand - what's wrong with stopping update by throwing ERROR in OnBeforeValidate in this case?

Slawek_Guzek

You can't. That's the 'beauty' of Extensions - you can only add to existing code.

On the other hand - what's wrong with stopping update by throwing ERROR in OnBeforeValidate in this case?

elbartus

Hello Slawek,

In fact, it's nothing wrong to throw an ERROR. But that way, you are not able to change the behaviour of the Validation. Here: Search Name is set to Name.

But thanks, that helped me a lot!

Slawek_Guzek

You can workaround it to some extent by creating two subscribers, one to OnBeforeValidate event and one to OnAfterValidate, both in one codeunit, set the EventSubscriberInstance property on that codeunit to Manual, and bind both subscribers manually (for example creating another subscriber subscribing to OnAfterCompanyOpen from Cu1, in another codeunit with default EventSubscriberInstance setting, handling automatic binding).

Manually bound subscribes (unlike the static-automatic ones) can preserve the object vars between calls, so you could remember the old Name in some global var in OnBeforeValidate, and put it back in OnAfterValidate in all required places - coding restoring the value in all required places manually of course, without using the Validate trigger on the field to avoid loops.

kriki

[Topic moved from 'Navision Financials' forum to 'NAV Three Tier' forum]