问题
I have a many-to-many relationship in my database of objects A to B. When i create a domain service the metadata looks fine. A has a collections of Bs, B has a collection of As. So it is correct. However the *.g.cs file generated doesn't have the same relationship.
Is there a way to make it work? I googled some answer to actually generate objects for the association table but i am curious if i can avoid this.
Thanks
回答1:
In the current release/version of RIA Services, you'll need the association table. We will most definitely be looking into this of course for a future release.
That said, I think often many-to-many relationships often have some interesting data associated with the relationship and as such, the middle table often has a real use, rather than existing for the sake of existing.
回答2:
Till MS implements it in RIA, you can use http://m2m4ria.codeplex.com/ We have used in one of our Silverlight/RIA projects for User/Role (many-to-many) relationship and worked fine.
来源：https://stackoverflow.com/questions/1768489/many-to-many-relationship-in-net-ria-services