PIPoint.InterpolatedValueAsync Method
- Last UpdatedNov 18, 2025
- 3 minute read
- PI System
- AF SDK 2024 R2
- Developer
Returns a single AFValue whose value is
interpolated at the passed time.
Namespace: OSIsoft.AF.PI
Assembly: OSIsoft.AFSDK (in OSIsoft.AFSDK.dll) Version: 3.1.1.1182
Syntax
public Task<AFValue> InterpolatedValueAsync( AFTime time, CancellationToken cancellationToken = default )
Public Function InterpolatedValueAsync ( time As AFTime, Optional cancellationToken As CancellationToken = Nothing ) As Task(Of AFValue) Dim instance As PIPoint Dim time As AFTime Dim cancellationToken As CancellationToken Dim returnValue As Task(Of AFValue) returnValue = instance.InterpolatedValueAsync(time, cancellationToken)
public: Task<AFValue^>^ InterpolatedValueAsync( AFTime time, CancellationToken cancellationToken = CancellationToken() )
member InterpolatedValueAsync : time : AFTime * ?cancellationToken : CancellationToken (* Defaults: let _cancellationToken = defaultArg cancellationToken new CancellationToken() *) -> Task<AFValue>
Parameters
- time
- Type: OSIsoft.AF.TimeAFTime
The time at which the value is desired. - 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: TaskAFValueReturns a task whose result is an AFValue interpolated for the PI point at the requested time stamp.
Exceptions
| Exception | Condition |
|---|---|
| AggregateException | Asynchronous methods throw AggregateException on failure which will contain one or more exceptions containing the failure. |
Remarks
| 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). |
| 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. |