using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.IO;
using Bytescout.XLS;
namespace SaveAsXML
{
class Program
{
static void Main(string[] args)
{
XLSDocument document = new XLSDocument("SimpleReport.xls");
document.WorkBook.Worksheets[0].SaveAsXML("SimpleReport.xml");
document.Close();
}
}
}

Download example source code: bytescoutxls_converting_excel_to_xml.zip (5 KB)