Reference

OpcClient.DeleteNodesHistory 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

Overload	Description
DeleteNodesHistory(IEnumerable<OpcDeleteNodeHistory>)	Deletes raw historical values of the nodes as defined by the commands specified using a single history update service request.
DeleteNodesHistory(params OpcDeleteNodeHistory[])	Deletes raw historical values of the nodes as defined by the commands specified using a single history update service request.

Exceptions (all overloads)

Exception	Condition
OpcException	The client is not connected to the server or the service execution failed upon different circumstances; for more details see exception details.
ObjectDisposedException	The object has been disposed of.

DeleteNodesHistory(IEnumerable<OpcDeleteNodeHistory>)

Deletes raw historical values of the nodes as defined by the commands specified using a single history update service request.

public IDictionary<OpcNodeId, OpcStatusCollection> DeleteNodesHistory(
    IEnumerable<OpcDeleteNodeHistory> commands)

Public Function DeleteNodesHistory(
    commands As IEnumerable(Of OpcDeleteNodeHistory)) As IDictionary(Of OpcNodeId, OpcStatusCollection)

Parameters

Name	Type	Description
commands	IEnumerable<OpcDeleteNodeHistory>	A sequence of OpcDeleteNodeHistory commands, each defining the node and the period of the raw values to delete from its history.

Returns

IDictionary<OpcNodeId, OpcStatusCollection>

A dictionary which provides for each node an OpcStatusCollection with the OpcStatus instances the server reports for the command.

Exceptions

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

Remarks

In case there several commands refer to the same node, the status results of these commands are combined in the collection of that node in the order of the commands. In case there the server reports no status per value for a command, the collection holds the status of the command for the node instead.

DeleteNodesHistory(params OpcDeleteNodeHistory[])

Deletes raw historical values of the nodes as defined by the commands specified using a single history update service request.

public IDictionary<OpcNodeId, OpcStatusCollection> DeleteNodesHistory(
    params OpcDeleteNodeHistory[] commands)

Public Function DeleteNodesHistory(
    ParamArray commands As OpcDeleteNodeHistory()) As IDictionary(Of OpcNodeId, OpcStatusCollection)

Parameters

Name	Type	Description
commands	params OpcDeleteNodeHistory[]	An array of OpcDeleteNodeHistory commands, each defining the node and the period of the raw values to delete from its history.

Returns

IDictionary<OpcNodeId, OpcStatusCollection>

A dictionary which provides for each node an OpcStatusCollection with the OpcStatus instances the server reports for the command.

Exceptions

Exception	Condition
ArgumentNullException	The commands array or one of its items is a null reference (Nothing in Visual Basic).

Remarks

In case there several commands refer to the same node, the status results of these commands are combined in the collection of that node in the order of the commands. In case there the server reports no status per value for a command, the collection holds the status of the command for the node instead.