download excel file using c# mvc 5 jquery

We can download files using the below mvc 5 code or jQuery code both code are woking. C# code work in server side but jQuery on client only.

Download Excel File using C# MVC 5 .Net

public ActionResult DownloadExcelFile(string Orgfile = "DownloadSampleFile.xlsx")
{
     string filePath = Server.MapPath("~/UploadedExcelFolder/DownloadSampleFile.xlsx");
     System.IO.FileInfo file = new System.IO.FileInfo(filePath);

     if (file.Exists)
     {
          Response.Clear();
          Response.AddHeader("Content-Disposition", "attachment; filename=" + Orgfile);
          Response.AddHeader("Content-Length", file.Length.ToString());
          Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
          Response.WriteFile(file.FullName);
       }
       return RedirectToAction("Success");
}

OR 

 Download Excel File using jQuery

$('#btnDownloadExcel').click(function () {
        window.location.href = "UploadedExcelDocuments/DownloadSampleFile.xlsx";
});