AF SDK Reference

AFListData.InterpolatedValue Method

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AFListData.InterpolatedValue Method

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Last UpdatedNov 18, 2025
2 minute read

Returns a interpolated value for each attribute in this list based on the passed time.

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

Syntax

public IList<AFValue> InterpolatedValue(
	AFTime time
)

Public Function InterpolatedValue ( 
	time As AFTime
) As IList(Of AFValue)

Dim instance As AFListData
Dim time As AFTime
Dim returnValue As IList(Of AFValue)

returnValue = instance.InterpolatedValue(time)

public:
IList<AFValue^>^ InterpolatedValue(
	AFTime time
)

member InterpolatedValue : 
        time : AFTime -> IList<AFValue>

Parameters

time: Type: OSIsoft.AF.TimeAFTime
The time at which the value is desired.

Return Value

Type: IListAFValue
Returns an AFValue list, one for each attribute in this list. If AFValue.IsGood returned by the data reference is , then the returned value is converted to the default UOM of the attribute and proper Type. The timestamp of each value will be at the requested time, with one exception where the request time is at or after AFTime.MaxValue, which will return the end-of-stream value for each attribute with the end-of-stream timestamp.

AF SDK Reference