Question

In LINQ to SQL, I could do:

context.User_Roles.DeleteAllOnSubmit(context.User_Roles.Where(ur => ur.UserId == user.UserId));

Whats the equivalent to this for entity framework?

Answer 1

@Femaref has the right idea, but for a true analog to L2E’s DeleteAllOnSubmit, you’ll want your extension method to make a copy of the entities being deleted before enumerating so that you don’t get “collection modified while enumerating” exceptions.

public static void DeleteAllObjects<TEntity>(this ObjectSet<TEntity> set, IEnumerable<TEntity> data) where TEntity : class {
    foreach(var entity in data.ToList()) //data.ToList() makes a copy of data for safe enumeration
        set.DeleteObject(entity);
}