OPC Studio User's Guide and Reference
SubscribeNode(Boolean,Object) Method



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.InformationModel Namespace > UAModelClient Class > SubscribeNode Method : SubscribeNode(Boolean,Object) Method
true to subscribe; false to unsubscribe.
The node on which the operation will be performed.
Subscribes or unsubscribes all designated model members of the given node.
Syntax
'Declaration
 
Public Overloads Sub SubscribeNode( _
   ByVal active As Boolean, _
   ByVal node As Object _
) 
'Usage
 
Dim instance As UAModelClient
Dim active As Boolean
Dim node As Object
 
instance.SubscribeNode(active, node)
public void SubscribeNode( 
   bool active,
   object node
)
public:
void SubscribeNode( 
   bool active,
   Object^ node
) 

Parameters

active
true to subscribe; false to unsubscribe.
node
The node on which the operation will be performed.
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.

The component is not licensed for the operation requested.
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