AF SDK Reference

AFDataCache.UpdateData Method (Boolean)

Save PDF

TABLE OF CONTENTS

AFDataCache.UpdateData Method (Boolean)

Save PDF

Last UpdatedNov 18, 2025
2 minute read

Update the time series cache for the attributes managed by this AFDataCache.

Namespace: OSIsoft.AF.Data
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182

Syntax

public AFErrors<AFAttribute> UpdateData(
	out bool hasMoreEvents
)

Public Function UpdateData ( 
	<OutAttribute> ByRef hasMoreEvents As Boolean
) As AFErrors(Of AFAttribute)

Dim instance As AFDataCache
Dim hasMoreEvents As Boolean
Dim returnValue As AFErrors(Of AFAttribute)

returnValue = instance.UpdateData(hasMoreEvents)

public:
AFErrors<AFAttribute^>^ UpdateData(
	[OutAttribute] bool% hasMoreEvents
)

member UpdateData : 
        hasMoreEvents : bool byref -> AFErrors<AFAttribute>

Parameters

hasMoreEvents: Type: SystemBoolean
Indicates whether there could be more events in the data source. hasMoreEvent is set to true whenever any of the data sources still have events to be retrieved down to the client.

Return Value

Type: AFErrorsAFAttribute
Returns a list of the errors associated with the AFAttribute that caused the error. If there are no errors, then is returned.

Remarks

The cache will be trimmed before being populated with data from the AFDataPipe. Events that are older than CacheTimeSpan from current time are subject to trimming.

Version Information

AFSDK

Supported in: 3.1.1, 3.1.0, 3.0.2, 3.0.1, 3.0.0, 2.10.11, 2.10.5, 2.10.0, 2.10, 2.9.5, 2.9, 2.8.5, 2.8, 2.7.5, 2.7, 2.6

AF SDK Reference