![](dotnetdiagramimages/GrapeCity_WPF_CalcEngine_GrapeCity_CalcEngine_Functions_CalcIsNAFunction.png)
'Declaration Public Class CalcIsNAFunction Inherits CalcBuiltinFunction
'Usage Dim instance As CalcIsNAFunction
public class CalcIsNAFunction : CalcBuiltinFunction
System.Object
GrapeCity.CalcEngine.Functions.CalcFunction
GrapeCity.CalcEngine.Functions.CalcBuiltinFunction
GrapeCity.CalcEngine.Functions.CalcIsNAFunction