Export excel without installing Excel 2007 in server

The following url used to create a excel file in specified location.
http://www.mikesknowledgebase.com/pages/CSharp/ExportToExcel.htm

After storing the excel file in server, it should be transmitted to local.

if (CreateExcelFileOriginal.CreateExcelDocument(dt, location))

  {

       HttpContext.Current.Response.Clear();

HttpContext.Current.Response.AddHeader("content-disposition", attachment;filename=" + "sample.xlsx");

       HttpContext.Current.Response.ContentType = "application/spl.xlsx";

       HttpContext.Current.Response.Charset = "";

       HttpContext.Current.Response.TransmitFile(location);

       HttpContext.Current.Response.Flush();

       HttpContext.Current.Response.End();

   }

Response.TransmitFile() to explicitly send the file from your ASP.NET application and then add the Content Type and Content-Disposition headers.