Hi All

I have written this code in startup class Program.cs and at runtime it generates error "The type initializer for 'NHibernate.Cfg.Configuration' threw an exception." on line "nhConfig = new Configuration();" whereas i have defined configuration file too. What could be the possible reason? Pls help

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using System;
using System.Windows.Forms;
using NHibernate;
using NHibernate.Cfg;

namespace ExampleApplication
{
public sealed class Program
{
private static Configuration nhConfig;
private static ISessionFactory nhFactory;

[STAThread]
static void Main()
{
nhConfig = new Configuration();
nhConfig.AddAssembly("ExampleApplication");
nhFactory = nhConfig.BuildSessionFactory();

Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new LogInForm());
}

public static ISession NHSession
{
get {return nhFactory.OpenSession(); }
}

private Program() {}
}
}
--------------------------------------------------------


App.config



<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
<section name="nhibernate" type="System.Configuration.NameValueSectionHandler, System, Version=1.0.5000.0,Culture=neutral, PublicKeyToken=b77a5c561934e080" />
</configSections>

<log4net>
<appender name="rollingFile" type="log4net.Appender.RollingFileAppender, log4net" >
<param name="File" value="log.txt" />
<param name="AppendToFile" value="true" />
<param name="RollingStyle" value="Date" />
<param name="DatePattern" value="yyyy.MM.dd" />
<param name="StaticLogFileName" value="true" />
<layout type="log4net.Layout.PatternLayout, log4net">
<param name="ConversionPattern" value="%d [%t] %-5p %c [%x] &lt;%X{auth}&gt; - %m%n" />
</layout>
</appender>
<root>
<priority value="DEBUG" />
<appender-ref ref="rollingFile" />
</root>
</log4net>

<nhibernate>

<add key="hibernate.connection.provider" value="NHibernate.Connection.DriverConnectionProvider" />
<add key="hibernate.dialect" value="NHibernate.Dialect.MsSql2000Dialect" />
<add key="hibernate.connection.driver_class" value="NHibernate.Driver.SqlClientDriver" />
<add key="hibernate.connection.connection_string" value="Data Source=SQLSERVER;Initial Catalog=ORMExample;Integrated Security=True;Pooling=False" />

<add key="hibernate.show_sql" value="true" />

</nhibernate>


</configuration>


Thanks and Regards
Gaurav Bhatia

The Inner Exception which is throws is

{"Could not load file or assembly 'log4net, Version=1.2.0.30714, Culture=neutral, PublicKeyToken=b32731d11ce58905' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)":"log4net, Version=1.2.0.30714, Culture=neutral, PublicKeyToken=b32731d11ce58905"}

Though I have added log4net.dll in references, then what could be the reason for it not loading log4net?

Thanks

Regards,
Gaurav

Problem Solved.
In App.Config file, i was giving the public key token for nhibernate "b77a5c561934e086" where as it was supposed to be "b77a5c561934e089"..

:)

Gaurav