handler

 $.ajax({
        type: "POST",
        url: "Qbs.ashx?acid=" + applicationCampaignId,
        dataType: "text",
        async: false,
        success: function (result) {
            totalrecords = result;
        }
    });



 public long GetCounteOfCampaing(string acid)
        {
            long totalCount;
            try
            {
                totalCount = Account2AppCampaignBusinessLogic.GetTotalRecordCounterOfCampaign(Common.CInt(acid));
            }
            catch (Exception)
            {
                totalCount = 0;
            }
            return totalCount;
          
        }

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            context.Response.Write(GetCounteOfCampaing(context.Request.QueryString["acid"]));
        }
      

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }