Occurs when the current Object Space's IObjectSpace.IsModified state is changed.
The ModifiedChanged event's handler receives an argument of the EventArgs type.
If you implement the IObjectSpace interface in the BaseObjectSpace class' descendant, you don't have to raise the ModifiedChanged event. It is raised in the protected BaseObjectSpace.SetIsModified method after the BaseObjectSpace.IsModified property has changed.
Handle this event to execute custom code when the Object Space's Modified state is changed. However, it is already handled internally to change Actions states in dependence of the IObjectSpace.IsModified property value.