easyui 分页 MVC

View

   <script type="text/javascript">
        var dd;
        var grid;
        $(function () {
            var queryData = null;
            grid = $('#grid').datagrid({   //定位到Table标签，Table标签的ID是grid
                url: '@Url.Action("getUserList")',   //指向后台的Action来获取当前菜单的信息的Json格式的数据
                title: '用户菜单',
                iconCls: 'icon-view',
                height: ,
                width: function () { return document.body.clientWidth * 0.9 },
                nowrap: true,
                autoRowHeight: false,
                striped: true,
                collapsible: true,
                pagination: true, //分页插件置为true
                pageSize: , //每页显示几条数据
                pageNumber: ,  //页索引
                rownumbers: true,
                sortOrder: 'asc',
                remoteSort: false,
                idField: 'U_ID',
                columns: [[
                    { field: 'ck', checkbox: true },   //选择
                     {title: '用户名', field: 'U_Name', width:  },
                     { title: '角色名称', field: 'R_Name', width:  },
                ]],
                toolbar: [{
                    id: 'btnAdd',
                    text: '添加',
                    iconCls: 'icon-add',
                    handler: function () {
                        ShowAddDialog(); //实现添加记录的页面
                    }
                }, '-', {
                    id: 'btnEdit',
                    text: '编辑',
                    iconCls: 'icon-edit',
                    handler: function () {
                        var selected = grid.datagrid("getSelected");
                        if (selected) {
                            var userID = selected.U_ID;
                            ShowEditOrViewDialog(userID); //实现修改记录的方法
                        } else {
                            $.messager.alert("友情提示", "请选择");
                        }
                    }
                }, '-', {
                    id: 'btnDelete',
                    text: '删除',
                    iconCls: 'icon-remove',
                    handler: function () {
                        Delete(); //实现直接删除数据的方法
                    }
                },
                 '-', {
                     id: 'btnReload',
                     text: '刷新',
                     iconCls: 'icon-reload',
                     handler: function () {
                         //实现刷新栏目中的数据
                         $("#grid").datagrid("reload");
                     }
                 }],
                onDblClickRow: function (rowIndex, rowData) {
                    $('#grid').datagrid('uncheckAll');
                    $('#grid').datagrid('checkRow', rowIndex);
                    ShowEditOrViewDialog(rowData.D_id);
                }
            })
</script>

Controller：

 /// <summary>
        /// 获取用户列表
        /// </summary>
        public ActionResult getUserList()
        {
            //判断参数不为空
            if (string.IsNullOrEmpty(Request.Params["page"]))
            {
                return null;
            }
            //获取前台参数数组值
            var page = Request.Params["page"];
            var pageSize = Request.Params["rows"];
            var pageIndex = int.Parse(page) - ;
            using (UserService.UserContractClient client = new UserService.UserContractClient())
            {
                int size = Convert.ToInt32(pageSize);
                int index = Convert.ToInt32(pageIndex);

                RoleService.RoleContractClient role = new RoleService.RoleContractClient();
                List<Role> rolelist = role.GetList().ToList();
                //管理员全部显示 其他角色显示部分
                var adminuser = (User)Session["adminuser"];
                var rid = adminuser.U_RoleID;
                var uid = adminuser.U_ID;
                string rname = role.GetRole(rid.ToString()).R_Name;
                if (rname.Contains("管理员"))
                {
                    List<User> userlist = client.GetList().OrderByDescending(s => s.U_ID).ToList();
                    //获取符合条件的用户总条数
                    int totalCount = userlist.Count();
                    var query = from b in rolelist
                                from c in userlist
                                where c.U_RoleID == b.R_ID
                                select new { c.U_ID, c.U_Name, b.R_Name };
                    //分页
                    query = query.Skip(size * (index)).Take(size);
                    var jsonResult = new { total = totalCount, rows = query };
                    return Json(jsonResult, JsonRequestBehavior.AllowGet);
                }
                else
                {
                    List<User> userlist = client.GetListOrderBy(uid).OrderByDescending(s => s.U_ID).Skip(size * (index)).Take(size).ToList();
                    //获取符合条件的所有记录条数
                    int totalCount = userlist.Count();
                    var query = from b in rolelist
                                from c in userlist
                                where c.U_RoleID == b.R_ID
                                select new { c.U_ID, c.U_Name, b.R_Name };
                    var jsonResult = new { total = totalCount, rows = query };
                    return Json(jsonResult, JsonRequestBehavior.AllowGet);
                }
            }
        }

Controller