I am using EPPlus to generate an XLSX file in C#. As soon as I instantiate the ExcelPackage with a memory stream - I get the error:
"A disk error occurred during a write operation. (Exception from HRESULT: 0x8003001D (STG_E_WRITEFAULT))"
Code is:
MemoryStream stream = new MemoryStream();
using (ExcelPackage package = new ExcelPackage(stream))
{
...
}
Has anyone else seen this?
None of the other answers quite got me there (the Excel worksheet was always empty), but this worked for me:
using (var package = new ExcelPackage())
{
var worksheet = package.Workbook.Worksheets.Add("Worksheet Name");
worksheet.Cells["A1"].LoadFromCollection(data);
var stream = new MemoryStream(package.GetAsByteArray());
}