Can you Pass Func<T,bool> Through a WCF Service?

Question

Func is a serializable class, but yet when I try to pass it as a parameter through a service. I'm told it "isn't a known type". I've tried the solutions here to no avail.

Many thanks out there...

Answer 1

No, basically. You can't pass an Expression either, since it talks to MemberInfo nodes. Your best bet is a string representation of the predicate.

Answer 2

There's work happening to enable it. Check out the Expression Tree Serialization project on the MSDN Code Gallery.