AFAttribute.GetValue Method (AFCase, UOM)

public AFValue GetValue(
	AFCase caseContext,
	UOM desiredUOM
)

Public Function GetValue ( 
	caseContext As AFCase,
	desiredUOM As UOM
) As AFValue

Dim instance As AFAttribute
Dim caseContext As AFCase
Dim desiredUOM As UOM
Dim returnValue As AFValue

returnValue = instance.GetValue(caseContext, 
	desiredUOM)

public:
AFValue^ GetValue(
	AFCase^ caseContext, 
	UOM^ desiredUOM
)

member GetValue : 
        caseContext : AFCase * 
        desiredUOM : UOM -> AFValue 

Parameters

caseContext

Type: OSIsoft.AF.AnalysisAFCase
The case context to be used when getting the attribute's value. If the case context is , then no context is used when getting the attribute's value. If the case context is not and the case context is not supported by this attribute's configuration, as indicated by the SupportedContexts property, then the context will be changed to an AFTimeRange context represented by the case's start and end times.

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 AFAttributeList.GetValue Overload methods as it can perform more efficiently in many instances.

Important
Once a value has been added to a case's result set, either through one of the AFCase.AddInput Overload methods or by setting its value with an AFCase context, then subsequent calls to GetValue with the same case context will not invoke the data reference but return the stored result value.

AFSDK

Reference