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