Hi David...

Here is a detailed description of my projects...

In Main project I have a class that impliments  BaseApplicationException

[Serializable]
public class CKException  :  BaseApplicationException
{
 public CKException(string p_sVillubod, Exception p_exVilla,string
p_sUtgafunumer, int p_nVerklidurNumer,string p_sStarfsmadurNumer, string
p_sStarfsmadurNafn) : base(p_sVillubod, p_exVilla)
 {
      System.Reflection.PropertyInfo pi =
p_exVilla.GetType().GetProperty("Numfber");
  }

 // protected constructor to de-seralize state data
 protected CKerfisvillaException(SerializationInfo info, StreamingContext
context) : base (info, context)
 {
   // Initialize state
   //some code
 }

 // override GetObjectData to serialize state data
 [SecurityPermission(SecurityAction.Demand, SerializationFormatter = true)]
 public override void GetObjectData(SerializationInfo info,
StreamingContext context)
 {
   // Serialize this class' state and then call the base class
GetObjectData
   ...some code
   base.GetObjectData(info, context);
  }
 }
}

also I have a class in this project that impliments IExceptionPublisher

public class CDSPublisher : IExceptionPublisher
{
   void IExceptionPublisher.Publish(Exception exception,
NameValueCollection additionalInfo, NameValueCollectionconfigSettings)
   {...}
}

Third Exception klass is called CVilla and it handles calls to function in
the CKException and CDSPublisher

public sealed class CVilla
{
   // init some variables...
 private CVilla() {}

 private static void writeException(string p_sException,Exception
p_exException)
 {
   ...
  CKException exK = new CKException(...);
  ExceptionManager.Publish(exKerfisvilla);
 }
...
}

All the forms in the main project inherit a class that handles any exception
handling and if an exception is thrown, then
the parent class handles the exception.  The forms call a function in the DB
project but if an exeption is thrown in that project, the
exception is not catched in the Main project? CVilla class is never ref. in
the db project and there is no exception handling there!
I can use Reflection to use the CVilla class but it must be another smarter
way to handle exception in large solutions.  I want to be able
to catch all errors in one place.

here is the app.config ..

<configuration>
<configSections>
 <section name="exceptionManagement"
type="Microsoft.ApplicationBlocks.ExceptionManagement.ExceptionManagerSectio
nHandler,Microsoft.ApplicationBlocks.ExceptionManagement" />
</configSections>

<exceptionManagement mode="on">

 <publisher mode="on" assembly="kerfi" type="kerfi.CDSPublisher" />
</exceptionManagement>

</configuration>

Hope this is what you are looking for....