System.Object
   GrapeCity.SpreadBuilder.DDColumn
   GrapeCity.SpreadBuilder.DDRow
   GrapeCity.SpreadBuilder.DDSecurity
   GrapeCity.SpreadBuilder.DDSheet
   GrapeCity.SpreadBuilder.DDSheets
   GrapeCity.SpreadBuilder.Workbook
   System.Exception
      System.ApplicationException
         GrapeCity.SpreadBuilder.SpreadBuilderException
            GrapeCity.SpreadBuilder.ColumnCountOutOfRangeException
            GrapeCity.SpreadBuilder.CompressionException
            GrapeCity.SpreadBuilder.InvalidPasswordException
            GrapeCity.SpreadBuilder.NoDDSheetsException
            GrapeCity.SpreadBuilder.RowCountOutOfRangeException
            GrapeCity.SpreadBuilder.VersionNotImplementedException
      System.SystemException
         System.ArgumentException
            GrapeCity.SpreadBuilder.DDSheetNameAlreadyExistsException
            GrapeCity.SpreadBuilder.InvalidDDSheetNameException

Reference

GrapeCity.ActiveReports.Export.Excel.v9 Assembly