LazyInitializationException in ASP.NET app with NHibernate

knightmeister · **Joined:** Sun Nov 28, 2010 2:01 am **Posts:** 3

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.

I do have current_session_context_class = web set in web.config, and I am using CurrentSessionContext.Bind on BeginRequest in Global.asax.

Can anyone offer some advice?

This is ASP.NET **NOT** ASP.NET MVC

rolandz · **Posted:** Wed Dec 01, 2010 8:53 am

Follow the OSIV (Open Session In View) term. The trick is that you open session at the beginning of the request and close it when request ends. This way you always have the session open and lazy things can get initialized.

On the other thing - it is not enough to just open session. You must bind the detatched object to the particular session to initialize lazy things.

Code:

session.Lock(obj, LockMode.None);

knightmeister · **Joined:** Sun Nov 28, 2010 2:01 am **Posts:** 3

Cheers mate - worked a treat.