Connectivity Software User's Guide and Reference
SubscribeMonitoredItem Method



OpcLabs.EasyOpcUACore Assembly > OpcLabs.EasyOpc.UA Namespace > IEasyUAClientExtension Class : SubscribeMonitoredItem Method
Subscribe to changes of a particular monitored item. For each significant monitored item change, either theIEasyUAClient.DataChangeNotification event is generated, or a specified callback method is invoked.

It is more efficient to subscribe to multiple monitored items using SubscribeMultipleMonitoredItems method.

Overload List
OverloadDescription
Subscribe to changes of a particular monitored item. For each significant monitored item change, either the Subscribe to a monitored item, specifying an object that holds all necessary arguments (the object can optionally contain the callback method as well).  
Subscribe to a monitored item, specifying an object that holds all necessary arguments, and a data change callback method.  
Subscribe to a monitored item, specifying an object that holds all necessary arguments, and an event callback method.  
Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also