'DeclarationPublicEvent SubmittingChanges As EventHandler(Of SubmittingChangesEventArgs)
'UsageDim instance As DomainDataSource
Dim handler As EventHandler(Of SubmittingChangesEventArgs)
AddHandler instance.SubmittingChanges, handler
This event is raised from SubmitChanges and enables a handler to cancel the submit before it starts. When a handler sets Cancel to true, the submit will be aborted and a subsequent SubmittedChanges event will not be raised. This differs slightly from canceling a submit by way of CancelSubmit.