You can achieve your goal by traversing our Metadata tree. In the metadata tree you will see that there is a collection of persistent types. That collection represents all your persistent classes and each of them has a property called ClassID. You can use that property in order to find the class you need.
The code for achieving this should look something similar to this:
MetadataContainer metadata = ObjectScopeProvider1.GetNewObjectScope().Database.MetaData;
classID = 1234;
className = metadata.PersistentTypes.Where(c => c.ClassId == classID).Select(c => c.Name).First();
If you are using our new Visual designer you can access the metadata via context.Metadata.
I hope that my answer has been useful to you. Please do not hesitate to contact us back if you have any further problems.
All the best,
the Telerik team
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