AFDataReference.InterpolatedValuesAtTimesAsync Method
- Last UpdatedNov 18, 2025
- 4 minute read
- PI System
- AF SDK 2024 R2
- Developer
Retrieves interpolated values at the specified times.
Namespace: OSIsoft.AF.Asset
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182
Syntax
public virtual Task<AFValues> InterpolatedValuesAtTimesAsync( IList<AFTime> times, string filterExpression, bool includeFilteredValues, AFAttributeList inputAttributes, AFValues[] inputValues, CancellationToken cancellationToken )
Public Overridable Function InterpolatedValuesAtTimesAsync ( times As IList(Of AFTime), filterExpression As String, includeFilteredValues As Boolean, inputAttributes As AFAttributeList, inputValues As AFValues(), cancellationToken As CancellationToken ) As Task(Of AFValues) Dim instance As AFDataReference Dim times As IList(Of AFTime) Dim filterExpression As String Dim includeFilteredValues As Boolean Dim inputAttributes As AFAttributeList Dim inputValues As AFValues() Dim cancellationToken As CancellationToken Dim returnValue As Task(Of AFValues) returnValue = instance.InterpolatedValuesAtTimesAsync(times, filterExpression, includeFilteredValues, inputAttributes, inputValues, cancellationToken)
public: virtual Task<AFValues^>^ InterpolatedValuesAtTimesAsync( IList<AFTime>^ times, String^ filterExpression, bool includeFilteredValues, AFAttributeList^ inputAttributes, array<AFValues^>^ inputValues, CancellationToken cancellationToken )
abstract InterpolatedValuesAtTimesAsync : times : IList<AFTime> * filterExpression : string * includeFilteredValues : bool * inputAttributes : AFAttributeList * inputValues : AFValues[] * cancellationToken : CancellationToken -> Task<AFValues> override InterpolatedValuesAtTimesAsync : times : IList<AFTime> * filterExpression : string * includeFilteredValues : bool * inputAttributes : AFAttributeList * inputValues : AFValues[] * cancellationToken : CancellationToken -> Task<AFValues>
Parameters
- times
- Type: System.Collections.GenericIListAFTime
List of timestamps at which to retrieve interpolated values - filterExpression
- Type: SystemString
A string containing a filter expression. Expression variables are relative to the attribute. Use '.' to reference the containing attribute. A or empty string indicates no filtering. If the attribute does not support the Filters option, the filter will be ignored. - includeFilteredValues
- Type: SystemBoolean
Specify to indicate that values which fail the filter criteria are present in the returned data at the times where they occurred with a value set to a "Filtered" enumeration value with bad status. Repeated consecutive failures are omitted. - inputAttributes
- Type: OSIsoft.AF.AssetAFAttributeList
The input attributes as previously specified by the data reference in the GetInputs(Object) call. The index of the values will match the index of the corresponding attribute previously returned. These values must be converted to the appropriate UOM required by this data reference. - inputValues
- Type: OSIsoft.AF.AssetAFValues
The input values are supplied to the data reference based on the attributes returned in the GetInputs(Object) call. The index of the values will match the index of the corresponding attribute previously returned. These values must be converted to the appropriate UOM required by this data reference. - cancellationToken
- 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: TaskAFValuesReturns a task whose result is an AFValues collection with the interpolated values at the specified times.
Exceptions
| Exception | Condition |
|---|---|
| AggregateException | Asynchronous methods throw AggregateException on failure which will contain one or more exceptions containing the failure. |
Remarks
| 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. |