'Declaration
 
<ExtensionAttribute()>
Public Overloads Shared Function ListDirectoryNames( _
   ByVal fileTransfer As IEasyUAFileTransfer, _
   ByVal endpointDescriptor As UAEndpointDescriptor, _
   ByVal directoryNodeDescriptor As UANodeDescriptor, _
   ByVal directoryPathElements As IReadOnlyList(Of String) _
) As ValueTuple(Of UANodeDescriptor,StringCollection)

'Usage
 
Dim fileTransfer As IEasyUAFileTransfer
Dim endpointDescriptor As UAEndpointDescriptor
Dim directoryNodeDescriptor As UANodeDescriptor
Dim directoryPathElements As IReadOnlyList(Of String)
Dim value As ValueTuple(Of UANodeDescriptor,StringCollection)
 
value = IEasyUAFileTransferExtension.ListDirectoryNames(fileTransfer, endpointDescriptor, directoryNodeDescriptor, directoryPathElements)

[Extension()]
public static ValueTuple<UANodeDescriptor,StringCollection> ListDirectoryNames( 
   IEasyUAFileTransfer fileTransfer,
   UAEndpointDescriptor endpointDescriptor,
   UANodeDescriptor directoryNodeDescriptor,
   IReadOnlyList<string> directoryPathElements
)

[Extension()]
public:
static ValueTuple<UANodeDescriptor^,StringCollection^> ListDirectoryNames( 
   IEasyUAFileTransfer^ fileTransfer,
   UAEndpointDescriptor^ endpointDescriptor,
   UANodeDescriptor^ directoryNodeDescriptor,
   IReadOnlyList<String^>^ directoryPathElements
) 

Parameters

fileTransfer

The OPC UA file transfer object that will perform the operation.

endpointDescriptor

Endpoint descriptor. Identifies the OPC-UA server.

directoryNodeDescriptor

Node descriptor of the OPC UA directory.

directoryPathElements

A path consisting of names of subdirectories starting from directoryNodeDescriptor forwards.

Return Value

The directoryNodeDescriptor must be an existing node in the server, of object type OpcLabs.EasyOpc.UA.AddressSpace.Standard.UAObjectTypeIds.FileDirectoryType.

If you need the node descriptors (node IDs) of the directories, use the BrowseDirectories(IEasyUAFileTransfer,UAEndpointDescriptor,UANamedNodePath)method.

Recommendation: Whenever possible, do not use this method directly, and use a higher-level abstraction instead. See e.g. the GetDirectoryContents2(IEasyUAFileTransfer,UAEndpointDescriptor,UANamedNodePath) method, which allows you to obtain an object that can be enumerated for files and directories underneath, in a way that is generic and not tied to OPC UA specifics.

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