OPC Studio User's Guide and Reference
ReadNode(Object,String) Method



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.InformationModel Namespace > UAModelClient Class > ReadNode Method : ReadNode(Object,String) Method
The node on which the operation will be performed.

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

The operation will be performed only on members tagged with this tag.

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

Reads model members of the given node that are tagged with the specified tag from the OPC-UA server.
Syntax
'Declaration
 
Public Overloads Sub ReadNode( _
   ByVal node As Object, _
   ByVal modellingTag As String _
) 
'Usage
 
Dim instance As UAModelClient
Dim node As Object
Dim modellingTag As String
 
instance.ReadNode(node, modellingTag)
public void ReadNode( 
   object node,
   string modellingTag
)
public:
void ReadNode( 
   Object^ node,
   String^ modellingTag
) 

Parameters

node
The node on which the operation will be performed.

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

modellingTag
The operation will be performed only on members tagged with this tag.

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

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.

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