'Declaration Public Class UltraCalcFunctionIsNumber Inherits BuiltInFunctionBase
public class UltraCalcFunctionIsNumber : BuiltInFunctionBase
ISNUMBER( value)
Value is an UltraCalcValue or the result of evaluating an UltraCalc expression that you want to test to determine whether it is a number or not. A numeric value can be an integer, floating-point or decimal number.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2