OPC Studio User's Guide and Reference
GetValueRank Method (IUAReadOnlyModelProvider)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.InformationModel Namespace > IUAReadOnlyModelProvider Interface : GetValueRank Method
Model node descriptor. Identifies the node in OPC UA information model.

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

Interrogates the information model for the OPC-UA value rank of the given node.
Syntax
'Declaration
 
<NotNullAttribute()>
Function GetValueRank( _
   ByVal modelNodeDescriptor As UAModelNodeDescriptor _
) As ValueResult(Of Integer)
'Usage
 
Dim instance As IUAReadOnlyModelProvider
Dim modelNodeDescriptor As UAModelNodeDescriptor
Dim value As ValueResult(Of Integer)
 
value = instance.GetValueRank(modelNodeDescriptor)

Parameters

modelNodeDescriptor
Model node descriptor. Identifies the node in OPC UA information model.

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

Return Value

Returns a OpcLabs.BaseLib.OperationModel.Generic.ValueResult<T> with the value rank.

This method never returns 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.

A method call was invalid for the object's current state.

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.

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