How to download the excel file ?

[rullymartanto]

I try to read and manipulate xlsx file and dowload the file, how to do that ?
and there is no Saveas method ?

FileInfo existingFile = new FileInfo(csvPath);
using (ExcelPackage package = new ExcelPackage(existingFile))
{
//get the first worksheet in the workbook
ExcelWorksheet worksheet = package.Workbook.Worksheets.First();
worksheet.Protection.IsProtected = false;
worksheet.Protection.AllowSelectLockedCells = false;
package.Saveas() ?
}

Thanks