Hi,
I recently encountered the well known 'MSDTC on server unavailable' message problem
while I was trying to delete an object from within the objects edit form (-> DataPortal_DeleteSelf ).
I was using the ConnectionManager pattern, so at first I was stumbled...
I found out that removing the Transactional attribute from the DataPortal_DeleteSelf override
solved the issue. Having the Transactional attribute on both DataPortal_DeleteSelf and
DataPortal_Delete resulted in two nested transactions, which obviously required MSDTC,
even with just one connection opened at a time...
' <Transactional(TransactionalTypes.TransactionScope)> _
Protected Overrides Sub DataPortal_DeleteSelf()
DataPortal_Delete(New SingleCriteria(Of Project, Guid)(ReadProperty(Of Guid)(IdProperty)))
End Sub
<Transactional(TransactionalTypes.TransactionScope)> _
Private Overloads Sub DataPortal_Delete(ByVal criteria As SingleCriteria(Of Project, Guid))
Using ctx = ContextManager(Of ProjectTracker.DalLinq.PTrackerDataContext).GetManager(ProjectTracker.DalLinq.Database.PTracker)
' delete project data
...
End Using
End Sub
So when you are just delegating to DataPortal_Delete, the attribute there seems sufficient, IMHO.
Maybe Project Tracker is following a wrong pattern here?
Stefan