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PIPointReplaceValuesAsync Method (AFTimeRange, IListAFValue, CancellationToken)

This method removes existing data within the specified AFTimeRange and inserts the specified values.

Namespace:  OSIsoft.AF.PI
Assembly:  OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version:
public Task<AFErrors<AFValue>> ReplaceValuesAsync(
	AFTimeRange timeRange,
	IList<AFValue> values,
	CancellationToken cancellationToken = null


Type: OSIsoft.AF.TimeAFTimeRange
The bounding time range for replacement of the existing values.
Type: System.Collections.GenericIListAFValue
The list of replacement values with an associated PIPoint for each value. If an empty list then existing data within the specified AFTimeRange will be deleted. The time stamp of AFValue in values must be within the specified AFTimeRange.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
A cancellation token used to abort processing before completion. Passing the default CancellationToken.None will run to completion or until the PIConnectionInfo.OperationTimeOut period elapses.

Return Value

Type: TaskAFErrorsAFValue
Returns a task whose result is if there are no errors. Otherwise the result is an AFErrorsTKey instance containing error information.
AggregateException Asynchronous methods throw AggregateException on failure which will contain one or more exceptions containing the failure.

This method requires PI Data Archive 2016 or later that supports DeleteRange feature. This is indicated by Supports(PIServerFeature) check returning for the case of DeleteRange.

If not specified in AFSDK.config, the AFBufferOption is defaulted to BufferIfPossible. The default buffering option for the current AF SDK client instance can be modified via the static property AFData.BufferOption.

Note Notes to Callers
This call might use a background task to complete some of its work. See the Threading Overview for some matters to consider when execution transitions to another thread.

Version Information


Supported in: 2.10.5, 2.10, 2.9.5, 2.9, 2.8.5, 2.8
See Also
Enabling Operational Intelligence