I have installed nhibernate 2.0 with MV2005.
These are my files:

ExampleClass.hbm.xml:

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" auto-import="true">
<class name="NHibernateExample.ExampleClass, NHibernateExample" table="ExampleClass">
<id name="ExampleClassId" column="ExampleClassId">
<generator class="native" />
</id>
<property name="Text" />
</class>
</hibernate-mapping>

App.config:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section
name="nhibernate"
type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e089" />
</configSections>
<nhibernate>
<add
key="connection.provider"
value="NHibernate.Connection.DriverConnectionProvider"
/>
<add
key="dialect"
value="NHibernate.Dialect.MsSql2005Dialect"
/>
<add
key="connection.driver_class"
value="NHibernate.Driver.SqlClientDriver"
/>
<add
key="connection.connection_string"
value="Server=localhost\SQLExpress;Database=NHibernateExample;Trusted_Connection=Yes;"
/>
</nhibernate>
</configuration>

Main code:
try
{
Configuration Config = new Configuration();

Config.AddAssembly("NHibernateExample");

ISessionFactory Factory = Config.BuildSessionFactory();
ISession Session = null;

Session = Factory.OpenSession();

ExampleClass ExClass = new ExampleClass();
ExClass.Text = "Test";

Session.Save(ExClass);

Session.Close();
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}

Error occur when the program try invoke third line of the code:
ISessionFactory Factory = Config.BuildSessionFactory();
in exp.message is : Could not find the dialect in the configuration.
I don't know what is wrong. I'm using .net 2.0, nhibernate from August.

Regards
difek

The configuration behavior changed with 2.0. Now you have to use the <hibernate-section> and the format that comes with it. <nhibernate> section is ignored.

It's one of the breaking changes listed here:

http://forum.hibernate.org/viewtopic.php?t=985289