((NPOI.XSSF.UserModel.XSSFWorkbook)(workbook)).IsHidden Exception

Mar 10, 2014 at 6:18 AM
Why appear at reading excel 2007 .
IsHidden = “((NPOI.XSSF.UserModel.XSSFWorkbook)(workbook)).IsHidden”Lead to“System.NotImplementedException”Exception

Please inform the next.Thank you.
Coordinator
Mar 13, 2014 at 8:07 PM
Why do you need to call this property? What's the purpose?