When doing a conversion from NHibernate to DataSet in my project I encountered that exception: "failed to lazily initialize a collection".
In my classes I use bags that have lazy="true". I heard somewhere that, the reson for this is that NHibernate creates temporary sessions and then closes them.
Can anybody help me to solve this problem?

You may read these topics: Winform lazy loading with seperate data layer and Lazy Loading in Winforms.