I did not find anything on the Internet on how to hide a worksheet in epplus. How to hide ddworksheet ?
ddworksheet
ExcelWorksheet ddworksheet = package.Workbook.Worksheets.Add("DropDownList");
Yes, you can use the Hidden property on the sheet:
Hidden
ExcelWorksheet ddworksheet = package.Workbook.Worksheets.Add("DropDownList"); ddworksheet.Hidden = OfficeOpenXml.eWorkSheetHidden.Hidden;