...Инициализация грида и загрузка данных
var localizationobj = {};
var localizationobj = {};
        localizationobj.pagergotopagestring = "на страницу:";
        localizationobj.pagershowrowsstring = "записей:";
        localizationobj.pagerrangestring = " из ";
        localizationobj.pagernextbuttonstring = "следующая";
        localizationobj.pagerpreviousbuttonstring = "предыдущая";
        localizationobj.sortascendingstring = "по возрастанию";
        localizationobj.sortdescendingstring = "по убыванию";
        localizationobj.sortremovestring = "не сортировать";
        localizationobj.emptydatastring = "нет данных";
// apply localization.
$("#jqxgrid").jqxGrid('localizestrings', localizationobj);

var source =
        {
            datatype: "json",
            datafields: [
                    { name: 'Id', type: 'int' },
                    { name: 'LastName', type: 'string' },
                    { name: 'FirstName', type: 'string' },
                    { name: 'MidName', type: 'string' },
                    { name: 'UserLogin', type: 'string' },
                    { name: 'IsLocked', type: 'bool' }
//....
                     ],
            cache: false,
            url: "http://localhost:8924/...",
            formatdata: function (data) {
                return { pagenum: data.pagenum, pagesize: data.pagesize, UserLogin: JSON.stringify(login), LastName: JSON.stringify(lname), FirstName: JSON.stringify(fname), MidName: JSON.stringify(mname)
                }
            }
        };

var dataAdapter = new $.jqx.dataAdapter(source,
                { contentType: 'application/json; charset=utf-8',
                    loadError: function (jqXHR, status, error) {
                        alert(error);
                    },
                    downloadComplete: function () {
                    }
                }
            );

$("#jqxgrid").on("bindingcomplete", function (event) { });

$("#jqxgrid").jqxGrid({
 width: 850,
            pageable: true,
            source: dataAdapter,
            autoheight: true,
            showfilterrow: true,
            filterable: true,
            selectionmode: 'singlerow',
//.....
});