What if I have an object with several properties:

obj.Product
obj.Customer
obj.From
obj.To

and normally I want to update all these properties but in some cases I only want to update From and To (even if the other fields have changed).....

Which is the best way to do this?

As far as I know, this is not possible out of the box in current version. You have to handle it yourself by resetting org values in your object or implement in further down, eg in an interceptor.

Hi,

When you do a .BuildSessionFactory(), NHibernate create the sentences Update/Insert/Delete onto command-objects ready to execute against the base, and this never change at least you are using versioning at entity. And this is a cool feature.

Is very important to you only go to Db only with the properties changed ?

Best regards

The problem is that the original poster want to save selected properties only even though some of the other changed. To accomplish what you describe you could use dynamic-update and dynamic-insert in your mapping so only changed columns will be part of the UPDATE/INSERT statements