The application can use this event to get a single callback with all datachange values in a publish response. Or, use the Notification event in the MonitoredItem class to get a callback for each Monitored Item.
Syntax
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As Subscription Dim handler As OnDataChangeNotification AddHandler instance.DataChangeCallback, handler | |
| C# | |
|---|---|
public event OnDataChangeNotification DataChangeCallback | |
Requirements
Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2015, .NET4.x