Casting error with projection

mattdp · **Joined:** Fri Feb 12, 2010 5:51 am **Posts:** 1

Hi,

I'm trying to use NHibernate for the first time. Most of the sample code and sandbox stuff I'm doing to learn the framework seems to work okay, so I assume my mappings are correct, but I can't get projections to work.

Here's the code:

Code:

        Dim crit As ICriteria = session.CreateCriteria(GetType(DataTransferObjects.Product))
        crit.SetProjection(Projections.ProjectionList)
        crit.Add( projections.RowCount()) )
        Dim products As System.Collections.IList = crit.List()

The error gets thrown on crit.Add() and is:

Code:

Unable to cast object of type 'NHibernate.Criterion.RowCountProjection' to type 'NHibernate.Criterion.ICriterion'.

Any suggestions?

wolli · **Posted:** Fri Feb 12, 2010 12:48 pm

Dim crit As ICriteria = session.CreateCriteria(GetType(DataTransferObjects.Product))
crit.SetProjection(Projections.ProjectionList().Add( projections.RowCount()) )