Implicit Type Conversion(UANodeId,String) Operator

Converts a System.String to a node Id.

Syntax

Visual Basic
C#
C++/CLI

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

'Usage

[NotNull()]
public UANodeId operator implicit( 
   string expandedText
)

[NotNull()]
public:
operator UANodeId^ ( 
   String^ expandedText
)

Parameters

expandedText: The string to be converted.
The value of this parameter can be null (Nothing in Visual Basic).

Return Value

For a non-null input, returns the node Id with the given expanded text. Returns a node Id with an empty expanded text if the input is null.

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).

Remarks

For non-null inputs, this operator is equivalent to OpcLabs.EasyOpc.UA.UANodeDescriptor.UANodeDescriptor Constructor(String).

This method or property does not throw any exceptions, aside from execution exceptions such as System.Threading.ThreadAbortException or System.OutOfMemoryException.

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
OPC UA Node IDs
Namespace indices in OPC UA Node Ids

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