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PIPointRecordedValuesAtTimesAsync Method

Returns recorded values based on the specified times and mode.

Namespace:  OSIsoft.AF.PI
Assembly:  OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 2.10.6.195
Syntax
public Task<AFValues> RecordedValuesAtTimesAsync(
	IList<AFTime> times,
	AFRetrievalMode mode,
	CancellationToken cancellationToken = null
)

Parameters

times
Type: System.Collections.GenericIListAFTime
List of time stamps at which to retrieve recorded values.
mode
Type: OSIsoft.AF.DataAFRetrievalMode
The mode is used to determine the value to return when a value does not exist at the exact time specified. The value is taken from the AFRetrievalMode enumeration.
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: TaskAFValues
Returns a task whose result is AFValues collection with the recorded values at the specified times.
Exceptions
ExceptionCondition
AggregateException Asynchronous methods throw AggregateException on failure which will contain one or more exceptions containing the failure.
Remarks

Note Notes to Callers
This method, property, or class is only available in the .NET 4 version of the SDK.

This method requires the PI Data Archive 2016 or later to take full advantage of performance. Otherwise, iterative RecordedValue at each timestamp (of the input times) will be performed in parallel.

Important note Important
Impersonation of AF SDK asynchronous calls relies on the .NET framework's built-in support for flowing execution context across asynchronous points. When making these calls while impersonating, the thread or runtime must be configured to propagate the impersonation across these asynchronous points (see the SecurityContext documentation for details).

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

AFSDK

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