Download Binary File from database as EML file in ASP.Net using C#

i want generate eml file using binary data which involved my email data and also I have add MIMEType is application/vnd.ms-outlook and enxtension is .eml

            filename = Regex.Replace(filename, @"[,~#'%&*:<>?/\{|}\n]", "");
            Attachments objAttachment = new Attachments();
            MemoryStream stream = (new Attachments()).GetAttachment(iAttachmentID);
            /*Amar test this*/
              //string  Updateddata =HttpContext.Current.Session["FirstName"].ToString();
              //byte[] byteArray = Encoding.ASCII.GetBytes(Updateddata);
            /*amar  this*/
            byte[] byteArray = stream.ToArray();
            Response.Clear();
            Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);
            Response.Buffer = true;
            Response.ContentType = "application/vnd.ms-outlook";
            Response.Charset = "";
            Response.Cache.SetCacheability(HttpCacheability.NoCache);
            Response.BinaryWrite(byteArray);
            Response.End();