Problems opening .xlsx file created with EPPlus and zipped in a folder with ICSharpCode.SharpZipLib
问题 I am creating a list of ExcelPackages (xlsx documents) using EPPlus, and adding them to a ZipOutputStream as ZipEntries. I think the Excel documents should be valid, as I can open them just fine when I write one of them to the Response object without zipping. The zip folder is created as expected, and the file(s) are there and doesnt seem to be empty, but when I try to open them I get the following error in Excel: Excel cannot open the file {Name}.xlsx because the file format or file