title: How do you insert an entity for a many-to-many relationship? (entity framework)
body: <p>If I a many-to-many relationship between Users and Roles and I have an instance of a User entity and several Role <em>Ids</em> can I insert a relationship between the two types of entities without having any other Role data and without doing a select on the Roles first? </p>
  
  <p><strong>Update:</strong></p>
  
  <p>I might not have been clear enough. I don't have an instance of a Role, only the role id. Is it possible to create the relationship between User and Role without filling a Role object from the database first?</p>