I also had the problem making NHibernate work with medium trust and this is what I did:

First..you need some sort of hosting that allows reflection in your server…There are some like crystaltech.com which will allow you to use reflection (in shared hosting) as long as it is used for assemblies within your designated app folder.

Second…

Download the Castle.DynamicProxy-vs2005 project. NHibernate ships with the dll, but you will need to modify the assembly to allow lazy loading under medium trust. Once you have the assembly, make sure nhibernate references this assembly and not the old dll.

Open the Castle.DynamicProxy-vs2005 project and look for the ModuleScope.cs file (it is right in the main directory). There look for the method:
private AssemblyName GetAssemblyName (bool signStrongName)
In there comment out the following code:

if (signStrongName)
{
byte[] keyPairStream = GetKeyPair();

if (keyPairStream != null)
{
assemblyName.KeyPair = new StrongNameKeyPair(keyPairStream);
}
}

Now give it a shot.

Mario

thanks a lot for your reply. They do have a “45 day money back guarantee” policy and I’ll do as you suggest.
I’m in the situation you were sometime ago: I want to put a project online and don’t want to invest too much in hosting. Using NHibernate would also mean less work.

Thank you once again,
Joel

You might ask if they offer a trial period. You could try out your apps, but then take a refund if it doesn’t work out.

Are still using nhibernate on a shared hosting environment at webhost4life?

Thanks

add key=”hibernate.bytecode.provider” value=”null”

you can disable the reflection optimizer setting putting this in the NHibernate config section:

That should work in medium trust if you don’t access private members through reflection (forget using the accessor nosetter.camelcase-underscore).