Reference

IOpcReadEventsHistoryService Members

Type

IOpcReadEventsHistoryService

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<OpcReadEventsHistoryResponse, OpcReadEventsHistoryRequest>.

Properties

TimestampsToReturn

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 OpcReadEventsHistoryRequest to process is used. The default value of this property is a null reference (Nothing in Visual Basic).

Methods

ReadEventsHistory

2 overloads

Overload	Description
ReadEventsHistory(OpcReadEventHistoryDetails, IEnumerable<HistoryReadValueId>)
ReadEventsHistory(OpcReadEventHistoryDetails, params HistoryReadValueId[])

Exceptions (all overloads)

Exception	Condition
ArgumentNullException
InvalidOperationException
OpcException

ReadEventsHistory(OpcReadEventHistoryDetails, IEnumerable<HistoryReadValueId>)

HistoryReadResultCollection ReadEventsHistory(
    OpcReadEventHistoryDetails details,
    IEnumerable<HistoryReadValueId> nodesToRead)

Function ReadEventsHistory(
    details As OpcReadEventHistoryDetails,
    nodesToRead As IEnumerable(Of HistoryReadValueId)) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadEventHistoryDetails
nodesToRead	IEnumerable<HistoryReadValueId>

Returns

HistoryReadResultCollection

ReadEventsHistory(OpcReadEventHistoryDetails, params HistoryReadValueId[])

HistoryReadResultCollection ReadEventsHistory(
    OpcReadEventHistoryDetails details,
    params HistoryReadValueId[] nodesToRead)

Function ReadEventsHistory(
    details As OpcReadEventHistoryDetails,
    ParamArray nodesToRead As HistoryReadValueId()) As HistoryReadResultCollection

Parameters

Name	Type	Description
details	OpcReadEventHistoryDetails
nodesToRead	params HistoryReadValueId[]

Returns

HistoryReadResultCollection