Occurs when validation rules associated with the Delete or Save validation contexts are about to be checked.
public event EventHandler<ContextValidatingEventArgs> ContextValidating
Public Event ContextValidating As EventHandler(Of ContextValidatingEventArgs)
The event handler receives an argument of the ContextValidatingEventArgs type.
Specifies the validation context whose associated validation rules are about to be checked.
Specifies the objects that are about to be validated in the validation context specified by the ContextValidatingEventArgs.Context property.
Handle this event to modify the collection of objects which will be validated in the current context. Check the current validation context using the Context property and add the required objects to the TargetObjects list.
See the example of using the ContextValidating event in the PersistenceValidationController class description.