'Declaration Public Class UltraCalcFunctionIsError Inherits BuiltInFunctionBase
public class UltraCalcFunctionIsError : BuiltInFunctionBase
ISERROR(value)
Value is an UltraCalcValue object (perhaps the result of evaluating an UltraCalc expression) thought to be an error value. The ISERROR function will return FALSE only when value is not an error value.
A more relaxed variation of this function is the ISERR function, which returns TRUE when an error value is not applicable. The ISERROR function treats this case as being an error. If you are using certain UltraCalc functions then sometimes error values of #N/A! should be treated by your application as non-errors and you should choose ISERR instead of ISERROR.
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