I have an Excel 2007 spreadsheet that I edit with the OpenXML SDK 2.
I remove some rows etc.
I would like to know how to save that Spreadsheetdocument to another filename.>
I strongly recommend ClosedXML - just used it for the first time and initially I've done an "Import from excel" functionality in few hours using standard Open XML 2.0 SDK - I've rewrite it in less then 15 minutes and also I've done the export to excel in 10 minutes using this tool.