Connectivity Software User's Guide and Reference
EasySparkplugMetricSubscriptionArguments Constructor(EasySparkplugMetricNotificationEventHandler,SparkplugMetricSubscriptionArguments)



OpcLabs.EasySparkplug Assembly > OpcLabs.EasySparkplug.OperationModel Namespace > EasySparkplugMetricSubscriptionArguments Class > EasySparkplugMetricSubscriptionArguments Constructor : EasySparkplugMetricSubscriptionArguments Constructor(EasySparkplugMetricNotificationEventHandler,SparkplugMetricSubscriptionArguments)
The callback to invoke for the notification.

The value of this parameter can be null (Nothing in Visual Basic).

The Sparkplug metric subscription arguments.

The value of this parameter cannot be null (Nothing in Visual Basic).

Initializes a new instance of the class with the specified callback and Sparkplug metric subscription arguments.
Syntax

Parameters

callback
The callback to invoke for the notification.

The value of this parameter can be null (Nothing in Visual Basic).

metricSubscriptionArguments
The Sparkplug metric subscription arguments.

The value of this parameter cannot be null (Nothing in Visual Basic).

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.

Remarks

 

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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