Error on forward mapping

[jr]

I had the application running just fine.
Now, when I try to run forward mapping (from Telerik menu), to update same new classes to the database, I get an error:

Exception:  Item has already been added. Key in dictionary: 'PoloData.LO'  Key being added: 'PoloData.LO'

Generated by the method: Void Insert(System.Object, System.Object, Boolean)

Stack Trace:    at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add)
   at System.Collections.Hashtable.Add(Object key, Object value)
   at OpenAccessRuntime.DataObjects.tools.workbench.model.MdDataObjectsFile.addClassesFromCodeModel(MdDocument doc, CodeModel cm)
   at OpenAccessRuntime.DataObjects.tools.workbench.model.MdDataObjectsFile.getDocument()
   at OpenAccessRuntime.DataObjects.tools.workbench.model.MdProject.load(IMappingData[] _mappingData, IDictionary _configProps)
   at Telerik.OpenAccess.Sdk.Addin.UserControls.MdProjectHelper.CreateMdProject(VAProject project)
   at Telerik.OpenAccess.Sdk.Addin.UserControls.MdProjectHelper.GetMdProject(VAProject project)
   at Telerik.OpenAccess.Sdk.Addin.UserControls.NonPersistentUserControl.ActivateUserControl(VAProject _project)
   at Telerik.OpenAccess.Sdk.Addin.UserControls.ClassViewControl.classTreeView_AfterSelect(Object sender, TreeViewEventArgs e)

Exception Type: System.ArgumentException


What are the possible causes of this error? Any idea?

Thanks

[Ady]

Hello jr,

 This might happen if you have the same class specified twice in code(without the 'partial'  keyword) or in the mapping? Can you please verify that? Also does pressing the  'Reload' button on the wizard help?

Regards,

Ady

the Telerik team

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[jr]

Not really that problem.
I don't why but app.config had 2 classes with the same name.
Sometimes when I change a name of a class, instead of changing in app.config, it inserts a new one.
Working now.
Thanks

[Ady]

Hello jr,

 In case you encounter a similar ambiguity in the mapping you can use the 'Check Settings' wizard to validate the mapping.
Do feel free to get back to us in case you need further assistance.

All the best,

Ady

the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Watch a video on how to optimize your support resource searches and check out more tips on the blogs.