Error opening SQL Server Compact Edition 4.0 using Nhibernate - nhibernate

Question

I have the following setup in app.config:
<hibernate-configuration xmlns="urn:nhibernate-configuration-2.2" >
<session-factory name="Nh.Data">
<property name="connection.provider">
NHibernate.Connection.DriverConnectionProvider
</property>
<property name="dialect">
NHibernate.Dialect.MsSqlCeDialect </property>
<property name="connection.driver_class">
NHibernate.Driver.SqlClientDriver
</property>
<property name="connection.connection_string">
Data Source=NhData.sdf
</property>
<property name="adonet.batch_size">16</property>
<property name="generate_statistics">true</property>
<property name="show_sql">true</property>
<mapping assembly="Nh.Model"/>
</session-factory>
</hibernate-configuration>
When using the following code to access the database,
private ISessionFactory CreateSessionFactory(){
var cfg = new NHibernate.Cfg.Configuration().Configure();
return cfg.BuildSessionFactory();
}
I am getting the following error on the line return cfg.BuildSessionFactory();
A network-related or instance-specific error occurred while
establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and
that SQL Server is configured to allow remote connections.
(provider: Named Pipes Provider, error: 40 - Could not open a
connection to SQL Server)
This is the same error I get when I change the connection property as recommended by Connection Strings.com
When I change the connection.connection_string property to Data Source=|DataDirectory|\bin\Debug\NhData.sdf, the error changes to
A network-related or instance-specific error occurred while
establishing a connection to SQL Server. The server was not found or
was not accessible. Verify that the instance name is correct and
that SQL Server is configured to allow remote connections.
(provider: SQL Network Interfaces, error: 26 - Error Locating
Server/Instance Specified)
I have the following files in the application folder to enable running of SQL Server Compact
sqlceca40.dll sqlcecompact40.dll sqlceoledb40.dll
sqlceer40EN.dll sqlceme40.dll sqlceqp40.dll
sqlcese40.dll System.Data.SqlServerCe.dll NhData.sdf
I know the path to the database file is correct, as I can connect and test the connection from within the the visual studio IDE connection dialog. I have read and re-read private deployment vs. central deployment (SQL Server Compact). Any searches on the above errors return results which are not related to my problem.
The laptop I am using is running Windows 7 Professional 64 Bit and I am using post-build event to copy the database and the DLLs to the application folder.
Is there something I'm missing or doing wrong?

Answer 1

I found what I was doing wrong. The following property <property name="connection.driver_class">NHibernate.Driver.SqlClientDriver</property> is for SQL Server and not SQL Server Compact Edition. Replacing the property value with NHibernate.Driver.SqlServerCeDriver works fine.