QuickOPC User's Guide and Reference
DANodeArguments Constructor(OperationArguments,ServerDescriptor,DANodeDescriptor)



OpcLabs.EasyOpcClassicCore Assembly > OpcLabs.EasyOpc.DataAccess.OperationModel Namespace > DANodeArguments Class > DANodeArguments Constructor : DANodeArguments Constructor(OperationArguments,ServerDescriptor,DANodeDescriptor)
Operation arguments object to be copied from.
Server descriptor. Identifies the OPC-DA server.
Node descriptor. Identifies the node in OPC server's address space.
Syntax
'Declaration
 
Public Function New( _
   ByVal operationArguments As OperationArguments, _
   ByVal serverDescriptor As ServerDescriptor, _
   ByVal nodeDescriptor As DANodeDescriptor _
)
'Usage
 
Dim operationArguments As OperationArguments
Dim serverDescriptor As ServerDescriptor
Dim nodeDescriptor As DANodeDescriptor
 
Dim instance As New DANodeArguments(operationArguments, serverDescriptor, nodeDescriptor)

Parameters

operationArguments
Operation arguments object to be copied from.
serverDescriptor
Server descriptor. Identifies the OPC-DA server.
nodeDescriptor
Node descriptor. Identifies the node in OPC server's address space.
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

You can obtain nodeDescriptor e.g. by calling one of the browsing methods on OpcLabs.EasyOpc.DataAccess.IEasyDAClient interface.

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