OPC Studio User's Guide and Reference
EasyUAMonitoredItemArguments Constructor(EasyUADataChangeNotificationEventHandler,UAMonitoredItemArguments)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.OperationModel Namespace > EasyUAMonitoredItemArguments Class > EasyUAMonitoredItemArguments Constructor : EasyUAMonitoredItemArguments Constructor(EasyUADataChangeNotificationEventHandler,UAMonitoredItemArguments)
A callback method to be invoked for each significant monitored item change.
Monitored item arguments object to be copied from.
Initializes a new instance of the class.
Syntax
'Usage
 
Dim dataChangeCallback As EasyUADataChangeNotificationEventHandler
Dim monitoredItemArguments As UAMonitoredItemArguments
 
Dim instance As New EasyUAMonitoredItemArguments(dataChangeCallback, monitoredItemArguments)

Parameters

dataChangeCallback
A callback method to be invoked for each significant monitored item change.
monitoredItemArguments
Monitored item arguments object to be copied from.
Exceptions
ExceptionDescription

A null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

This is a usage error, i.e. it will never occur (the exception will not be thrown) in a correctly written program. Your code should not catch this exception.

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