Any way to stream bytes from StreamWriter directly to http response?

[TimurUtyaganov]

Sorry, I'm not very familiar with this library and I could not find a way to stream xlsx file directly to http response. Now I have to wait until the StreamWriter is done and then write everything to http bodyWriter.

[xuri]

This questions similar with issues #753, #1052 and #2190.

With the spreadsheet specification limit (OPC part), the workbook serialization should be waiting all worksheet has been ready.

The workbook serialization required be waiting until all worksheets are ready. So, either stream writer writes temporary data to external storage or local storage, all data of worksheet need to load back from external storage or local storage when save the workbook.