//扩展easyuidatagrid无数据时显示界面
  var emptyView = $.extend({}, $.fn.datagrid.defaults.view, {
      onAfterRender: function (target) {
          $.fn.datagrid.defaults.view.onAfterRender.call(this, target);
          var opts = $(target).datagrid('options');
          var vc = $(target).datagrid('getPanel').children('div.datagrid-view');
          if (opts.rownumbers) {
              vc.children('div.datagrid-view1').css('display', 'block');
          }
         if (opts.showFooter) {
             vc.children('div.datagrid-view2').children('div.datagrid-footer').css('display', 'block');
         }
         vc.children('div.datagrid-empty').remove(); 
         if (!$(target).datagrid('getRows').length) {
             var d = $('<div class="datagrid-empty"></div>').html(opts.emptyMsg || 'no records').appendTo(vc);
             vc.children('div.datagrid-view1').css('display', 'none');
             vc.children('div.datagrid-view2').children('div.datagrid-footer').css('display', 'none');
         }
     }
 });