XPObjectSpace.EnableObjectDeletionOnRemove(Object, Boolean) Method
Enables/disables the deletion of persistent objects from the data source when they are removed from the specified collection.
NuGet Package: DevExpress.ExpressApp.Xpo
A collection of persistent objects that are requested to be removed from the database along with their removal from the collection.
true, to enable the deletion from the database along with the removal from the collection; false, to disable it.