Saves a specified Workbook as a BIFF8 format (Excel 97 or later) .xls file.
public static void Save(this ExcelApplication excelApplication, Workbook workbook, Microsoft.SharePoint.SPListItem listItem, String fileName)
Public Overridable Sub Save(ByVal excelApplication As ExcelApplication, ByVal workbook As Workbook, ByVal listItem As Microsoft.SharePoint.SPListItem, ByVal fileName As String)
The current ExcelApplication object which is saving the workbook to file
SharePoint List Item to which the file is attached
Specifies a file name for the Workbook. ExcelWriter will save the file as an attachment to the List Item using this name.
If there is a problem creating, opening, or writing to the file specified, or reading from the workbook object.