Implicit Type Conversion(UANodeId,UABuiltInType) Operator

Creates a node Id that is the data type Id that corresponds to the specified OPC UA build-in type (an enumeration).

Syntax

Visual Basic
C#
C++/CLI

'Declaration
 
<NotNullAttribute()>
Overloads Public Operator Widening CType( _
   ByVal builtInType As UABuiltInType _
) As UANodeId

'Usage

[NotNull()]
public UANodeId operator implicit( 
   UABuiltInType builtInType
)

[NotNull()]
public:
operator UANodeId^ ( 
   UABuiltInType builtInType
)

Parameters

builtInType: The OPC UA built-in type.

Return Value

Because there is an implicit conversion from UANodeId to OpcLabs.EasyOpc.UA.UANodeDescriptor, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UANodeId in any place where the OpcLabs.EasyOpc.UA.UANodeDescriptor is expected as input, and the corresponding node descriptor will be constructed automatically.

Also, because the UANodeId has an implicit conversion to System.String, and it converts to the expanded text of the node Id (ExpandedText), in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use the returned UANodeId in any place where expanded text of a node Id (a string) is expected as input, and the corresponding expanded text will be taken automatically from the node Id.

This method never returns null (Nothing in Visual Basic).

Exceptions

Exception	Description
System.ComponentModel.InvalidEnumArgumentException	An invalid enumeration value was used. 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.

Exception

Description

System.ComponentModel.InvalidEnumArgumentException

An invalid enumeration value was used.

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

OPC UA node Id, represented by the UANodeId class, directly identifies a node in a server's address space.

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

UANodeId Class
UANodeId Members
Overload List
FromUABuiltInType Method
OPC UA Node IDs
Namespace indices in OPC UA Node Ids

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