Enumerates files under the specified OPC UA directory.
Syntax
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.
Return Value
Returns a sequence of names and node descriptors of the files under the specified OPC UA directory.
Exceptions
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. |
OpcLabs.EasyOpc.UA.OperationModel.UAException |
The OPC UA operation has failed. This operation exception in uniformly used to allow
common handling of various kinds of errors. The System.Exception.InnerException always contains
information about the actual error cause.
This is an operation error that depends on factors external to your program, and thus cannot be always avoided. Your code must handle it appropriately. |
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