Unable to cast object of type NHibernate.Collection.Generic.PersistentGenericBag to List

Question

I have a class called ReportRequest as:

public class ReportRequest
{
    Int32 templateId;
    List entityIds;

    public virtual Int32? Id
            


        

Answer 1

Use collection interfaces instead of concrete collections, so NHibernate can inject it with its own collection implementation.

In this case, use IList<int> instead of List<int>

Answer 2

I found that using ICollection<T> worked where IList<T> did not.

I'm no NHibernate wizard, but I did want to throw a bone to someone else who might land on this issue.