仅选择Nhibernate IQueryable中的特定列

Question

I have an entity that is mapped (using Fluent Nhibernate) to a view in the database.
The view has many columns, but the user can choose the columns that he wants to see in a report. I would like the resulting database query to only contain those columns, for performance reasons.
I think this can be done using QueryOver<>, as explianed here: How to select only a few columns in my NHibernate query?
The problem is that I need to obtain an Iqueryable for paging and sorting, so I am using the Linq Session.Query<> extension method.
I either need a way to convert the QueryOver to an IQueryable or to apply the projection directly to the IQueryable. As the columns to select are dynamic, I cannot create a new entity class or a new mapping.
Thanks

Answer 1

Do you really need to use LINQ? If so, check out System.Linq.Dynamic NuGet package, which is based on Microsoft code. I wrote some posts on that which may help you, see for example: Dynamic Linq Extension Method . You could do better with Criteria or HQL, though.