I have about 20 PostgreSQL 8.1 and 8.2 databases in customer sites.
Every database contains about 150 tables.
Some tables contain user-defined fields which are different in different sites.
Base fields and table names are always the same. Some tables contain additional fields for custom business logic.

I'm creating NHIBERNATE .NET/MONO Winforms C# application using Visual C# 2005 Express.

Currently I'm using DataRow object and SELECT * FROM mytable to store and retrieve those variable columns.

It seems that user-defined columns are and DataRow based properties are not supported by nhibernate.

To fix this I think that application should create hbm files and entity assemblies (c# entity classes) dynamically from database structure to support user-added fields.
After database sturcture is changed, application can dedect this and generate new mapping file and entity class from database.

Any idea or sample how to implement this ?

Where to find framework or sample application which uses WinForms with NHibernate ?

Andrus.