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.
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.

Return Value

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

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.

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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