| GrapeCity.Xaml.SpreadSheet.Data Namespace > CellRange Class > IsValidRange Method : IsValidRange(Worksheet,Boolean) Method | 
'Declaration Public Overloads Function IsValidRange( _ ByVal worksheet As Worksheet, _ ByVal isSpan As Boolean _ ) As Boolean
true if the cell range is a valid range in the specified sheet; otherwise, false.Target Platforms: Windows Server 2012, Windows RT