OPC Studio User's Guide and Reference
Add Method (UANodeId)



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.AddressSpace Namespace > UANodeId Class : Add Method
Node Id. Identifies the node in OPC server's address space.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

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

The browse path element.

Because the OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement has an implicit conversion from UAQualifiedName, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAQualifiedName (containing a target qualified name, which becomes the "any hierarchical" forward reference) in place of this parameter, and the corresponding OPC UA browse path element will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement.FromUAQualifiedName static method instead.

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

Creates a browse path by adding a browse path element to a node Id.
Syntax
'Declaration
 
<NotNullAttribute()>
Public Shared Function Add( _
   ByVal nodeId As UANodeId, _
   ByVal browsePathElement As UABrowsePathElement _
) As UABrowsePath
'Usage
 
Dim nodeId As UANodeId
Dim browsePathElement As UABrowsePathElement
Dim value As UABrowsePath
 
value = UANodeId.Add(nodeId, browsePathElement)

Parameters

nodeId
Node Id. Identifies the node in OPC server's address space.

Because the UANodeId has an implicit conversion from System.String, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a string (representing the expanded text of the nodeId) in place of this parameter, and the corresponding OPC UA node Id will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the UANodeId Constructor(String) constructor instead.

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

browsePathElement
The browse path element.

Because the OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement has an implicit conversion from UAQualifiedName, in languages that support implicit conversion operators (such as C# or VB.NET), you can simply use a UAQualifiedName (containing a target qualified name, which becomes the "any hierarchical" forward reference) in place of this parameter, and the corresponding OPC UA browse path element will be constructed automatically. When the implicit conversion operators are not supported (such as with Python.NET), you can use the OpcLabs.EasyOpc.UA.Navigation.UABrowsePathElement.FromUAQualifiedName static method instead.

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

Return Value

Returns a browse path with the given starting node, and one given browse path element.

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

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

Remarks

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

See Also

Reference

UANodeId Class
UANodeId Members
OPC UA Node IDs
Namespace indices in OPC UA Node Ids