Reference

OpcClient.BrowseNodes Method

Type

OpcClient

Namespace

Opc.UaFx.Client

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Members

OpcClient Members

Also in

Opc.UaFx.Client

2 overloads · since v2.9

Overload	Description
BrowseNodes(IEnumerable<OpcBrowseNode>)since v2.9	Browses the nodes as defined by the commands specified to examine their attributes and their references.
BrowseNodes(params OpcBrowseNode[])since v2.9	Browses the nodes as defined by the commands specified to examine their attributes and their references.

Exceptions (all overloads)

Exception	Condition
OpcException	The client is not connected to the server.
ObjectDisposedException	The object has been disposed of.

BrowseNodes(IEnumerable<OpcBrowseNode>)

since v2.9

Browses the nodes as defined by the commands specified to examine their attributes and their references.

public IEnumerable<OpcNodeInfo> BrowseNodes(IEnumerable<OpcBrowseNode> commands)

Public Function BrowseNodes(
    commands As IEnumerable(Of OpcBrowseNode)) As IEnumerable(Of OpcNodeInfo)

Parameters

Name	Type	Description
commands	IEnumerable<OpcBrowseNode>	A sequence of OpcBrowseNode commands, each defining the node, the view, the type of references and the degree of nodes to browse.

Returns

IEnumerable<OpcNodeInfo>

A sequence of OpcNodeInfo instances, one for each command in the order of the commands. Each instance is of the OpcNodeInfo class or of one of its derived classes depending on the category of the node.

Exceptions

Exception	Condition
ArgumentNullException	The commands sequence is a null reference (Nothing in Visual Basic).
LicenseException	The license is expired.

Remarks

The sequence returned is evaluated deferred: the commands are verified and processed and the exceptions documented are thrown not before the sequence is enumerated. In case there a node cannot be found or retrieved from the server no exception is thrown; instead an OpcNodeInfo is provided whose Category is Unspecified.

BrowseNodes(params OpcBrowseNode[])

since v2.9

Browses the nodes as defined by the commands specified to examine their attributes and their references.

public IEnumerable<OpcNodeInfo> BrowseNodes(params OpcBrowseNode[] commands)

Public Function BrowseNodes(
    ParamArray commands As OpcBrowseNode()) As IEnumerable(Of OpcNodeInfo)

Parameters

Name	Type	Description
commands	params OpcBrowseNode[]	An array of OpcBrowseNode commands, each defining the node, the view, the type of references and the degree of nodes to browse.

Returns

IEnumerable<OpcNodeInfo>

A sequence of OpcNodeInfo instances, one for each command in the order of the commands. Each instance is of the OpcNodeInfo class or of one of its derived classes depending on the category of the node.

Exceptions

Exception	Condition
ArgumentNullException	The commands array is a null reference (Nothing in Visual Basic).

Remarks

The sequence returned is evaluated deferred: the commands are verified and processed and the exceptions documented are thrown not before the sequence is enumerated. In case there a node cannot be found or retrieved from the server no exception is thrown; instead an OpcNodeInfo is provided whose Category is Unspecified.