AFAttribute.GetValue Method (AFTimeRange, UOM)

public AFValue GetValue(
	AFTimeRange timeRange,
	UOM desiredUOM
)

Public Function GetValue ( 
	timeRange As AFTimeRange,
	desiredUOM As UOM
) As AFValue

Dim instance As AFAttribute
Dim timeRange As AFTimeRange
Dim desiredUOM As UOM
Dim returnValue As AFValue

returnValue = instance.GetValue(timeRange, 
	desiredUOM)

public:
AFValue^ GetValue(
	AFTimeRange timeRange, 
	UOM^ desiredUOM
)

member GetValue : 
        timeRange : AFTimeRange * 
        desiredUOM : UOM -> AFValue 

Parameters

timeRange

Type: OSIsoft.AF.TimeAFTimeRange
The time range context to be used when getting the attribute's value. If the time range context is not supported by this attribute's configuration, as indicated by the SupportedContexts property, then the context will be changed to an AFTime context at the end of the time range. The time context to be used when getting the attribute's value.

desiredUOM

Type: OSIsoft.AF.UnitsOfMeasureUOM
The desired unit of measure for the returned value. If , then the value is returned in the unit of measure specified by the DefaultUOM property.

Return Value

The data reference configuration specifies how to read the value of the attribute. The AFDataReference.UOM property specifies the actual UOM of the external data value referenced by this attribute.

When obtaining values for multiple attributes, consider using one of the AFAttributes.GetValue Overload methods as it can perform more efficiently in many instances.

Security Note
You must have ReadData security rights to read an attribute value.

If the Element associated with this attribute has more than one AFVersion associated with it and a QueryDate for the element has not been specified, then this method will invoke the call on the version of the element corresponding to the specified context.

AFSDK

Reference