Hello,

I'm newbie in NHibernate.
I'd like to use NHibernate with Visual Studio.
I generate all my classes and the Nhibernate mapping file with a free software found in MyGenerationSoftware.
However, when trying few generated classes, Visual Studio doesn't seem to find the mapping file, wherever I put it even if I configure it to search in a specific directory...

Does anybody encounter this problem ?
Any help is welcome.

Thank you

Hi tpsisavath,

Try to add your mappings file to the configuration explicitly. Example:

Configuration cfg = new Configuration();
cfg.AddXmlFile("somePath\\yourMappings.hbm.xml");

Regards, Tonn

Tonn,

I'm trying this aproach (i'm using VS2005 too) but it's no working. In my case my class is in App_Code\Department.vb together with the App_Code\Department.hbm.xml file.

Lets look into that.
(Btw I'm doing C# but the port to VB should be straightforward)


Try this (tested code) using your own filename, classname and propertyname:

Configuration cfg = new Configuration();
cfg.AddXmlFile(@"D:\C#\test\HibernateTest\HibernateTest\User.hbm.xml"); // your filename here

NHibernate.Mapping.PersistentClass pclass = cfg.GetClassMapping(typeof(User)); // your classname here instead of User
MessageBox.Show(pclass.MappedClass.Name);

NHibernate.Mapping.Property property = pclass.GetProperty("Username"); // your propertyname here instead of Username
MessageBox.Show(property.Name);


See if I you get errors like:
"Could not find file"
pclass == null
"property not found: ..."

If you don't get an error your mapping file is loaded.
Let me know...

do you guys have the mapping files being built as an embedded resource? I'm not sure if that's associated with the problems you folks are having but I had problems figuring that out when I started. To do it just right click on the .xml file in VS and go to properties and set the build action to embedded resource.

Hi w00tfest99,
Thanks for your response.


We're now talking about two basic methods:

1) Add the MyMappings.hbm.xml as an embedded resource and use MyConfiguration.AddAssembly("MyAssembly");

2) Simply use MyConfiguration.AddXmlFile("MyMappings.hbm.xml");


Method 1) is generally used in toturials but all newbies (you and me included) seem to trip over the correct settings.
Method 2) is more intuitive. You simple add the file mentioned, that's all. It doesn't have to be an embedded resource. It doesn't have to be part of your project.

So if things don't work I always suggest to try method 2).