public void ProcessRequest(HttpContext context)
        {
            //context.Response.ContentType = "text/plain";
            var id = context.Request.QueryString["id"];
           // LumexDBPlayer db = LumexDBPlayer.Start();
            DataTable dt = new DataTable();
            ProductBLL product = new ProductBLL();
            dt = product.GetProductNamesBySalesCenter(id); 

            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < dt.Rows.Count; i++)
            {
                string employee = dt.Rows[i]["ProductName"].ToString()+";";
                sb.Append(employee).Append(Environment.NewLine);
            }

            context.Response.Write(sb.ToString());
        }