Download Excel in ASP.Net

The Following Function downloads the Excel .

It accepts the following paramete :
fileName : It contains the path with FileName . I.e : "D:\MyExcel.exe".

Code :

    /// <summary>
    /// Download Excel template with some existing data
    /// </summary>
    /// <param name="fileName"></param>
    private void DownloadExcel(string fileName)
    {
        try
        {
            FileInfo file = new FileInfo(fileName);
            if (file.Exists)
            {
                // Clear the content of the response
                Response.ClearContent();
                Response.Clear();

                // add the header that specifies the default filename for the Download/SaveAs dialog
                Response.AddHeader("Content-Disposition", "attachment; filename=LMSUsers.xls");

                // add the header that specifies the file size, so that the browser can show the download progress
                Response.AddHeader("Content-Length", file.Length.ToString());

                // specify that the response is a stream that cannot be read by the client and must be downloaded
                Response.ContentType = "application/vnd.ms-excel";

                // send the file stream to the client
                Response.WriteFile(file.FullName);
                Response.BufferOutput = true;
                Response.Flush();
                Response.Close();

                //Delete the file if Required
                file.Delete();
            }
        }
        catch (Exception ex)
        {
            throw new Exception(ex.InnerException.Message);
        }
    }