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