var postData = $(gridId).jqGrid("getGridParam", "postData");

                    $.each(paras, function (k, v) {

                        delete postData[v.name];

                    });

if (d != null && d.length > 0) {

                        var pars = {};

                        $.each(d, function (k, v) { pars[v.name] = v.val; });

                        $(gridId).jqGrid("setGridParam", { postData: pars }).trigger("reloadGrid");

                    }

                    else {

                        $(gridId).trigger("reloadGrid");

                    }