How can I retain update bindings while showing additional information?

I'd like to display a linq-to-sql on a datagridview as such:

Code:

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Dim myQ = From b In _dcBooks.Books Select New With {Key b.ID, b.Title, b.Genre, b.ISBN, b.Format, b.Series, _
            .Author =b.BooksAuthors.Count()}

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the formula for the authors column is simplified as it would normally display nothing, the only author or "multiple".

When I add this column the automatic updates that the following query implements don't work:

Code:

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Dim myQ=from b in _dcBooks.Books select b

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Is it possible to retain the automatic updates/deletes with additional query induced columns like this or is there a simple way to put them in my code?

I can read C# or vb so answers in either is ok by me.