![](dotnetdiagramimages/image1358.png)
public sealed class MapMemberDataSourceChangingEvent : ArcGIS.Core.Events.AsyncPresentationEvent<MapMemberCancelEventsArgs>
Public NotInheritable Class MapMemberDataSourceChangingEvent Inherits ArcGIS.Core.Events.AsyncPresentationEvent(Of MapMemberCancelEventsArgs)
System.Object
ArcGIS.Core.Events.EventBase
ArcGIS.Core.Events.AsyncPresentationEvent<TPayload>
ArcGIS.Desktop.Mapping.Events.MapMemberDataSourceChangingEvent
Target Platforms: Windows 11, Windows 10, Windows 8.1