Telerik OpenAccess ORM with SQL Server 2005

Question

I'm trying out this ORM & new to this. I have following code:

IObjectScope scope = Database.Get("MyConnection").GetObjectScope();

try
{
   scope.Transaction.Begin();
   Reading r = new Reading();
   r.ReadingURL = reading.ReadingURL;
   r.IsActive = true;
   scope.Add(r);
   scope.Transaction.Commit();
}
finally
{
   scope.Dispose();
}

When I run this I get following error on "Add":

Telerik.OpenAccess.Exceptions.InvalidOperationException: Class 'WritingChallenge.Reading' is persistent but not known in this context.

It seems for some reason database connection is lost? I'm not sure what is the issue here.

Answer 1

The issue here is that the model that was connected to the WritingReplacementConnection was having no information about the WritingChallenge.Reading type.

Did you specify a mappingConfiguration that included this type?

You can also ask this kind of questions in the forums at Telerik Forums - .NET ORM.