QuickOPC User's Guide and Reference
BrowseTree(IUAReadOnlyPubSubSecurityKeyService,UAPubSubSecurityKeyServiceTreeNodeTypes) Method



OpcLabs.EasyOpcUA Assembly > OpcLabs.EasyOpc.UA.PubSub.SecurityKeyService.Extensions Namespace > IUAReadOnlyPubSubSecurityKeyServiceExtension Class > BrowseTree Method : BrowseTree(IUAReadOnlyPubSubSecurityKeyService,UAPubSubSecurityKeyServiceTreeNodeTypes) Method
OPC UA PubSub security key service (read-only).
The types of tree nodes to be returned.
Browses a tree of objects available in the OPC UA security key service, returning the node types specified.
Syntax

Parameters

readOnlyPubSubSecurityKeyService
OPC UA PubSub security key service (read-only).
treeNodeTypes
The types of tree nodes to be returned.

Return Value

Returns a tree traversable for the objects in the SKS.
Exceptions
ExceptionDescription

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.

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