Application.BeforeDataRecordsetDelete Event (Visio)
Occurs before a DataRecordset object is deleted from the DataRecordsets collection.
This Visio object or member is available only to licensed users of Visio Professional 2013.
If you're using Microsoft Visual Basic or Visual Basic for Applications (VBA), the syntax in this topic describes a common, efficient way to handle events.
If you want to create your own Event objects, use the Add or AddAdvise method. To create an Event object that runs an add-on, use the Add method as it applies to the EventList collection. To create an Event object that receives notification, use the AddAdvise method. To find an event code for the event you want to create, see Event codes.