EasyUA Reference
HistoryReadEvent(IList<HistoryReadValueId>,ReadEventDetails) Method
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EasyUA Assembly > Advosol.EasyUA Namespace > Session Class > HistoryReadEvent Method : HistoryReadEvent(IList<HistoryReadValueId>,ReadEventDetails) Method

nodesToRead
List of event notifier object nodes to read event history from. Includes a continuation point to continue previous read requests.
details
Configuration parameters for the history read of events. Configuration parameters include, - the start time of the requested time domain, - the end time of the requested time domain, - the event filter, - a limitation of the number of results per node.

Glossary Item Box

Reads the event history for a list of event notifier objects synchronously from an OPC server.

Syntax

Visual Basic (Usage)Copy Code
Dim instance As Session
Dim nodesToRead As IList(Of HistoryReadValueId)
Dim details As ReadEventDetails
Dim value As List(Of HistoryEventReadResult)
 
value = instance.HistoryReadEvent(nodesToRead, details)
C# 
public List<HistoryEventReadResult> HistoryReadEvent( 
   IList<HistoryReadValueId> nodesToRead,
   ReadEventDetails details
)

Parameters

nodesToRead
List of event notifier object nodes to read event history from. Includes a continuation point to continue previous read requests.
details
Configuration parameters for the history read of events. Configuration parameters include, - the start time of the requested time domain, - the end time of the requested time domain, - the event filter, - a limitation of the number of results per node.

Return Value

The event history for each notifier.

Requirements

Target Platforms: Windows 7/8/10, Windows Server 2003/2008/2012/2015, .NET4.x

See Also

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