$("#btn_search").click(function () {

            url = "/AMEvents/GetGridJson?evtype=1";

            var $gridList = $("#gridList");

            var posData = $("#searchform").formSerialize()

            $gridList.setGridParam(

                {

                    url: url,

                    postData: posData

                }

            ).trigger("reloadGrid");

        });

//查询按钮中给定新的url