hi all,

I just want to know why i have to declare properties virtual ???
How is it work ???

Thank you for anwers.

Because nhibernate is creating a proxy of the entity when it is lazy load it, and because NHibernate needs to handle polymorphism correctly, it creates a new instance and forward everything to it.

It seems to require virtual keyword for every public member (e.g. for methods as well).

This could be a performance drawback, because there is always a check for an overriden public member by the .Net framework ?
Other thing is, that i might not want to allow every public member in my domain object to be overriden ?

Why is this required for every public member? not for only properties that are descibed in the mapping file?

Just a bit confused and worried,

King Regards,
Taavi

Your question was answered by Ayende. NHibernate creates a subclass of your classes as a proxy.

It's a limitation if you want to use proxies. If you turn off all proxying you don't need the virtual keyword (I think), but you'll lose all lazy loading.

Symon.