TryParse Method (_UANodeIdParser)

Converts the string representation of an OPC-UA node Id to equivalent node Id object. A return value indicates whether the conversion succeeded.

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<CanBeNullAttribute()>
Function TryParse( _
   ByVal s As String, _
   ByVal requireNamespace As Boolean, _
   ByRef nodeId As Object _
) As StringParsingError

'Usage
 
Dim instance As _UANodeIdParser
Dim s As String
Dim requireNamespace As Boolean
Dim nodeId As Object
Dim value As StringParsingError
 
value = instance.TryParse(s, requireNamespace, nodeId)

[CanBeNull()]
StringParsingError TryParse( 
   string s,
   bool requireNamespace,
   out object nodeId
)

[CanBeNull()]
StringParsingError^ TryParse( 
   String^ s,
   bool requireNamespace,
   [Out] Object^ nodeId
)

Parameters

s: Expanded text of the node Id.
The value of this parameter can be null (Nothing in Visual Basic).
requireNamespace: Determines whether the node Id must contain a namespace or namespace index.
nodeId: A OpcLabs.EasyOpc.UA.AddressSpace.UANodeId object. The converted node Id object.
The value of this parameter can be null (Nothing in Visual Basic).

Return Value

Returns null if was converted successfully; otherwise, returns an error object that describes the problem.

This method can return null (Nothing in Visual Basic).

Exceptions

Exception Description

Exception	Description
System.ArgumentNullException	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.

System.ArgumentNullException

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

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

Reference

_UANodeIdParser Interface
_UANodeIdParser Members

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