Linq to SQL DTOs and composite objects

Question

I am using a similar approach to others in keeping my LINQ objects in my LINQ data provider and returning an IQueryable to allow filtering etc. This works fine for filtering a

Answer 1

I have been able to work successfully with a similar approach:

var courses = from c in Map(origCourses)
where !expiredStatuses.Contains(c.Status)
select c;

Where Map has:

    select new UserCourseListItem
    {
        CourseID = c.CourseID,
        CourseName = cm.CourseName,
        CourseType = c.CourseType.Value
        ...

How about trying it with that type of initialization (instead of constructors).

Ps. this is part of a working application, and the expiredStatuses is even related to a complex expression.

Update 1: This is similar compared to the mentioned scenario, because:

• Map is returning an IQueryable, which is a POCO object.
• After calling the Map method that returns an IQueryable with the POCO object I am applying a filter against it.