Reference

IOpcReadNodesHistoryService Members

Type

IOpcReadNodesHistoryService

Namespace

Opc.UaFx.Services

Assembly

Opc.UaFx.Advanced.dll

Package

Opc.UaFx.Advanced v2.59.0

Also in

Opc.UaFx.Client

Inherits members from IOpcService<OpcReadNodesHistoryResponse, OpcReadNodesHistoryRequest>.

Properties

TimestampsToReturn

since v2.11

Gets or sets the OpcTimestampsToReturn to use to request historical data from the server.

OpcTimestampsToReturn? TimestampsToReturn { get; set; }

Property TimestampsToReturn As OpcTimestampsToReturn?

Property value

Nullable<OpcTimestampsToReturn>

One of the members defined by the OpcTimestampsToReturn enumeration; otherwise a null reference (Nothing in Visual Basic). In case there the value is a null reference (Nothing in Visual Basic) the TimestampsToReturn of the OpcReadNodesHistoryRequest to process is used. The default value of this property is a null reference (Nothing in Visual Basic).

Methods

ReadNodesHistory

2 overloads

Overload	Description
ReadNodesHistory(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)
ReadNodesHistory(OpcReadHistoryDetails, params HistoryReadValueId[])

Exceptions (all overloads)

Exception	Condition
ArgumentNullException
InvalidOperationException
OpcException

ReadNodesHistory(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)

HistoryReadResultCollection ReadNodesHistory(
    OpcReadHistoryDetails details,
    IEnumerable<HistoryReadValueId> nodesToRead)

Function ReadNodesHistory(
    details As OpcReadHistoryDetails,
    nodesToRead As IEnumerable(Of HistoryReadValueId)) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
nodesToRead	IEnumerable<HistoryReadValueId>

Returns

HistoryReadResultCollection

ReadNodesHistory(OpcReadHistoryDetails, params HistoryReadValueId[])

HistoryReadResultCollection ReadNodesHistory(
    OpcReadHistoryDetails details,
    params HistoryReadValueId[] nodesToRead)

Function ReadNodesHistory(
    details As OpcReadHistoryDetails,
    ParamArray nodesToRead As HistoryReadValueId()) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
nodesToRead	params HistoryReadValueId[]

Returns

HistoryReadResultCollection

ReadNodesHistoryModified

2 overloads

Overload	Description
ReadNodesHistoryModified(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)
ReadNodesHistoryModified(OpcReadHistoryDetails, params HistoryReadValueId[])

Exceptions (all overloads)

Exception	Condition
ArgumentNullException
InvalidOperationException
OpcException

ReadNodesHistoryModified(OpcReadHistoryDetails, IEnumerable<HistoryReadValueId>)

HistoryReadResultCollection ReadNodesHistoryModified(
    OpcReadHistoryDetails details,
    IEnumerable<HistoryReadValueId> nodesToRead)

Function ReadNodesHistoryModified(
    details As OpcReadHistoryDetails,
    nodesToRead As IEnumerable(Of HistoryReadValueId)) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
nodesToRead	IEnumerable<HistoryReadValueId>

Returns

HistoryReadResultCollection

ReadNodesHistoryModified(OpcReadHistoryDetails, params HistoryReadValueId[])

HistoryReadResultCollection ReadNodesHistoryModified(
    OpcReadHistoryDetails details,
    params HistoryReadValueId[] nodesToRead)

Function ReadNodesHistoryModified(
    details As OpcReadHistoryDetails,
    ParamArray nodesToRead As HistoryReadValueId()) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadHistoryDetails
nodesToRead	params HistoryReadValueId[]

Returns

HistoryReadResultCollection