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Mapping documents:
<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2">
<class name="HibernateTest.TestSpec,HibernateTest , Version=1.0.0.0, Culture=neutral" table="TestSpec">

<id name="TestSpecId" column="TestSpecId" type="Int32" unsaved-value="0">
<generator class="native"/>
</id>
<property column="Author" type="String" name="Author" not-null="true" length="50" />
<property column="CreationDate" type="DateTime" name="CreationDate" not-null="true" />
<property column="Description" type="byte[]" name="Description" />
<property column="DataTypeId" type="Int32" name="DataTypeId" />
<property column="ProgramId" type="Int32" name="ProgramId" not-null="true" />

</class>
</hibernate-mapping>

Code between sessionFactory.openSession() and session.close():
Configuration cfg = new Configuration();
cfg.AddAssembly("HibernateTest");

ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
ITransaction transaction = session.BeginTransaction();


FileStream fs = new FileStream(@"C:\maintest2.doc", FileMode.Open);
byte[] dataArray = new byte[fs.Length];
ReadData(fs, dataArray);

TestSpec testSpec = new TestSpec();
testSpec.CreationDate = DateTime.Now;
testSpec.Author = "MyName";
testSpec.Description = dataArray;




// Tell NHibernate that this object should be saved
session.Save(testSpec);

// commit all of the changes to the DB and close the ISession
transaction.Commit();
session.Close();


Full stack trace of any exception that occurs:
> HibernateTest.exe!HibernateTest.Form1.Form1_Load(object sender = {HibernateTest.Form1, Text: Form1}, System.EventArgs e = {System.EventArgs}) Line 44 C#
[External Code]
HibernateTest.exe!HibernateTest.Program.Main() Line 17 + 0x1a bytes C#
[External Code]

Name and version of the database you are using:
MSQL2000


Hi, I have been working with this for a while:
When I try to run my little test program, I get that the "Could not compile the mapping document: HibernateTest.TestSpec.hbm.xml" error. I have remembered to make the file embedded, but I can't see what else i could do better. I have used MyGeneration to generate the mapping.
Help is greatly appreciated :)

Not sure, obviously my first thought was the embedded issue, it's caught me a few times.

What I'd recommend is using some try/catch blocks around session creation etc. You can catch an NHibernate.HibernateException.

In the InnerException there is usually good detail like "Invalid Column Name" etc that will help troubleshoot.

If still no luck, post the exception details here

I found the error myself. I have used myGeneration to generate the mappings, and apparently it converts my Binary fields to byte[], which NHibernate doesn't understand.