Are these classes serializable? I'd like to transport them over a namedpipe WCF service.

Both the Expression class and the EntityField2 class have the SerializableAttribute.

An entityfield is serializable to XML, the expression objects aren't. You're trying to formulate filters and the like and pass them to a WCF service? it might be WCF will serialize the expression object, but will very likely fail when deserializing them.

I've done some test and it works. I've got thru WCF Expression and EntityField.

methodman wrote:

I've done some test and it works. I've got thru WCF Expression and EntityField.

Ok Not sure if every expression instance will work though, but I think WCF serializes it using the serializer which simply emits types and re-instantiates the types at the other end, so, while that works OK for all public values, it depends if the internal values of the Expression object are also serialized, but if your tests succeed, I'd say, go for it (we just didn't implement specific code for this)

thank you for some clarification about this. I'll observe its behavior.

btw I'm using code from this topic for serialization

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