How to include multiple columns in a many to many relationship with nhibernate? -

i have following db schema:

users -id (uniqueidentifier) -firstname -lastname -email  authproviders -id (smallint) -name  userauthproviders -id (uniqueidentifier) -user (uniqueidentifier, fk) -authprovider (smallint, fk) -identity (nvarchar) 

i need map authproviders user object. started idbag, looks allows me have id, user relationship, , authprovider relationship. need able include identity well.

what else can use map it?

you need use many-to-one , one-to-many, ends 3 classes instead of two. can eliminate joining class public api, you'll still have deal in poco class internals.

a more complete answer can found here:

nhibernate many-to-many - how retrieve property join table , associate child?