为什么LoadProperty没有为1：N关系加载相关实体？ （CRM2011，早期绑定实体类）

Question

Suppose I have a custom entity new_someentity which has 2 other related entities: an "owner" entity which I'll call new_ownerentity (this is a N:1 relationship) and a "child" entity which I'll call new_childentity (1:N relationship).

I'm attempting to populate the related entities by calling LoadProperty :

new_someentity en = context.new_someentitySet.First();
context.LoadProperty(en, "new_someentity_new_ownerentity");
context.LoadProperty(en, "new_someentity_new_childentity");

Afterward, en.new_someentity_new_ownerentity is populated as I expect it to be with a reference to the owner entity, but en.new_someentity_new_childentity is simply still null. No errors are produced.

What's the deal?

On a side note, is there really not a concise way to load a related entity for an IEnumerable of entities without needing to use LoadProperty on each entity individually? This seems like a pretty classic case of an N+1 queries issue.

Answer 1

Just because you think it should return an empty list when the object doesn't have any child entities doesn't mean that's the way LoadProperty works.

So for anyone else who comes upon this:

LoadProperty will leave the property null when there aren't any related records for that record, even on 1:N relationships.