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Asked: 2026-05-18T09:29:11+00:00

Using NHibernate with ASP.NET 4. I have had no issues retrieving objects, but I’ve

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Using NHibernate with ASP.NET 4.

I have had no issues retrieving objects, but I’ve just got to a point with nested objects that I can’t figure out.

I am using lazy=true and when accessing a lazy-load collection I get the message: 

Initializing[type#3]-failed to lazily initialize a collection of role: [type], no session or session was closed

Even if I call SessionFactory.OpenSession() immediately prior to the object being accessed, it makes no difference. I have also tried accessing the collection in a using ISession block to no luck.

Edit to add – I do have current_session_context_class = web set in web.config, and I am using CurrentSessionContext.Bind on BeginRequest.

Can anyone offer some advice?

Not an MVC app

I read this – don’t know how accurate it is, and it is Hibernate:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2878

It says something about a bug in many-to-many relationships.

Here is my HBM mapping:

<bag name="Objects" table="ObjectInstance" cascade="all" lazy="true">
  <key column="branchId" />
  <many-to-many class="InventoryObjectInstance" column="objectInstanceId" />
</bag>
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  1. Editorial Team

    Does that happen after you perform some save/update operations? Where and when are you closing the session? To me, it sounds like you close the session right after save call or in some other method before the web page gets rendered. In other words, make sure you are using Open Session in View pattern and close the session only in the end of current web-request. You can also check out this post.

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