I asked before about loading many-to-one relation in a lazy way. I should add to my mapping files “Lazy=true” in the class definition and then declare the class properties as Overridable.
Now I’m having the following problem. I have these classes.

<class name=" Empresa " table="Empresas" lazy="true">
<id name="Id" type="Int32" unsaved-value="0">
<column name="idEmpresa" sql-type="int" not-null="true" unique="true" />
<generator class="native" />
</id>
<property name="Codigo" type="String">
<column name="codEmpresa" length="4" sql-type="char" not-null="true" unique="true" />
</property>
<property name="Descripcion" type="String">
<column name="Descripcion" length="60" sql-type="char" not-null="true"/>
</property>
<many-to-one name="Sector" class="Sector">
<column name="IdSector" sql-type="int" not-null="false"/>
</many-to-one>
</class>

And

<class name="Sector " table="Sectores" lazy="true">
<id name="Id" type="Int32" unsaved-value="0">
<column name="IdSector" sql-type="int" not-null="true" unique="true" />
<generator class="native" />
</id>
<property name="CodSector" type="String">
<column name="codSector" length="3" sql-type="char" not-null="true"/>
</property>
<property name="Descripcion" type="String">
<column name="Descripcion" length="60" sql-type="varchar" not-null="true"/>
</property>
</class>

When I load first a list with Empresas, first a “Select” on Empresas table is done and then, several selects on Sector table are done (one for each Object Empresa that I show in the list), all this works fine but when I load a ComboBox with Sectores and a new Select on Sectores table is done, the new Sector objects (that weren’t loaded in the Empresas List) don’t show their Description in the ComboBox, they show “Sector” (their namespace) instead.
Could anybody help me?

I don't think this is an nhibernate problem, you probably just need to override the ToString() method on your Sector class and have it return the description.

Hi grennis, thanks for your reply.
When I listed the Sector objects and watched the list, I noticed that the Sector objects (that were loaded at the first time when I loaded the Empresa objects) are CProxyTypeSectorCommon_INHibernateProxy_ISerializable2 and the new Sector objects that were just loaded to fill the ComboBox are Common.Sector, both are in the same list and the latest objects are the ones that don’t show their Description in the ComboBox.