Convert XLS to XLSB Programmatically?

Question

I have a customer that needs to convert XLS files to XLSB. Has anyone done this programmatically, (with or without an add-on --- doesn\'t matter --- just need to be able to

Answer 1

Well, then there is a short format verison:

using Microsoft.Office.Interop.Excel;

// init excel
Application excelApplication = new Application();

// ...

// open book in any format
Workbook workbook = excelApplication.Workbooks.Open("1.xls", XlUpdateLinks.xlUpdateLinksNever, true, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

// save in XlFileFormat.xlExcel12 format which is XLSB
workbook.SaveAs("1.xlsb", XlFileFormat.xlExcel12, Type.Missing, Type.Missing, Type.Missing, Type.Missing, XlSaveAsAccessMode.xlExclusive, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

// close workbook
workbook.Close(false, Type.Missing, Type.Missing);

// ...

// shutdown excel
excelApplication.Quit();

You will need a Excel installation with .NET programming support (disabled by default in installer!) and reference MS Office PIA assembly for Excel from your project:

References: Workbooks.Open, workbook.SaveAs, XlFileFormat.xlExcel12