OPC Studio User's Guide and Reference
UnregisterNode Method (_EasyUAClientNodeRegistration)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.Services.ComTypes Namespace > _EasyUAClientNodeRegistration Interface : UnregisterNode Method
Registration handle of the node that should be unregistered.
Unregisters the node specified by its registration handle.
Syntax
'Declaration
 
Sub UnregisterNode( _
   ByVal registrationHandle As Integer _
) 
'Usage
 
Dim instance As _EasyUAClientNodeRegistration
Dim registrationHandle As Integer
 
instance.UnregisterNode(registrationHandle)
void UnregisterNode( 
   int registrationHandle
)
void UnregisterNode( 
   int registrationHandle
) 

Parameters

registrationHandle
Registration handle of the node that should be unregistered.
Exceptions
ExceptionDescription

One of the arguments provided to a method is not valid.

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.

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

If you have more nodes to unregister, it is strongly recommended that you use the OpcLabs.EasyOpc.UA.Services.IEasyUAClientNodeRegistration.UnregisterMultipleNodes method instead, for performance reasons.

The method may perform the unregistration asynchronously.

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