Error -Type mismatch: cannot convert from void to Criteria

Question

I have below two Criteria -

1. Criteria searchCriteria = CriteriaFactory.And(ItemSchemaCriteria, PublicationCriteria);

2. finalCriteria = CriteriaFactory.And(andCriteria);

here andCriteria is an array of some Keyword Criteria.

Now when I try to add these both criteria and assign it in another Criteria named myCriteria the as below:

myCriteria = searchCriteria.addCriteria(finalCriteria);

Below compilation error comes:

"Type mismatch: cannot convert from void to Criteria"

NOTE: As I debug and found that both searchCriteria and finalCriteria are not NULL.

Could somebody give me some pointers here to fix this error?

Answer 1

As hinted at by Nick, the Criteria.AddCriteria method doesn't return a Criteria object, so you can't assign it as you're trying to. What you probably want is something like this:

searchCriteria.AddCriteria(finalCriteria);
myCriteria = searchCriteria;

Note that if you do this, searchCriteria and myCriteria will be the same object instance, so changes to one will affect the other (until one of them is reassigned).