public void ProcessRequest(HttpContext context)
        {
            String associate_id = "909";
            //String associate_id=context.Session["associate_id"].ToString();

            CBusPassBO BO = new CBusPassBO();
            var res=BO.GetBusPass(associate_id);
            JavaScriptSerializer js = new JavaScriptSerializer();
            //Debug.WriteLine("rslt :" + js.Serialize(res));
            context.Response.Write(js.Serialize(res));
            context.Response.ContentType = "text/plain";
        }