Hi ,

I am new to NHibernate. I am trying to do one sample on that.
I am getting one exception and i could not resolve this one.

Assembly Name : HibernateSample
Class Name : Employee

Employee.hbm.xml
-----------------------

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.0" default-access="property">
<class name="NHibernate.HibernateSample.Employee, HibernateSample" table="employee">
<id name="Id" column="emp_id">
<generator class="assigned" />
</id>
<property name="FirstName" column="fname" type="String"/>
<property name="LastName" column="lname" type="String"/>
<property name="JobId" column="job_id" type="Integer"/>
<property name="Hiredate" column="hire_date" type="DateTime"/>

</class>
</hibernate-mapping>

I have added the assembly like this

nhConfig.AddAssembly("HibernateSample")

I am getting exception after above line

Could not load type NHibernate.HibernateSample.Employee from assembly HibernateSample.


Can anyone help me please ...........

Thanks,
Natraj

This is a very common issue for newbies.

Make sure that your hbm.xml file is an "Embedded Resource" in your VS.NET project...

If you still can't solve that, do some search on this forum; there are load of topics about it with all possible solutions (you may use the keywords: "could not load type" or "MappingException")

How to do that in Visual Studio 2005? I can't choose the kind of reference... is there a workaround for VS 2005?

Don't try to add the mapping file as a reference! Instead add the mapping to the solution (as an existing file) or create a new XML file. Click on the file name in the solution explorer. Look at the properties pane. The first property is named "Build Action". From the dropdown select "Embedded Resource". It works the same for all VS versions.

Cheers,
Radu

Thats the problem, if i do as you said, klick on the file and then the properties, the first field is Misc - 'File Name', the other one is 'Full Path' - there are no other properties left...

The problem is in connection with Visual Studio 2005 ( as here http://nhibernate.sourceforge.net/forum ... .php?t=514 post nr. 6 and 7 also describes)... there is no "Embedded Resource" to choose

That happens if you add the file to a Web Project! The new deployment model for web applications does not create a single dll for your web project anymore, but it compiles every page independently. On this model indeed there is no way to add the mapping file as an embeded resource. Instead, create all your business domain classes in a class library project as this will also help you to decouple your business tier from the UI tier. In a class library project you will be able to embed your mappings as resources.

HTH,
Radu

Thanks for your explanation and help!

Ok, then i will try to do it with a class library...

*Newbie* Phuu! :)