datagrid列表绑定上下键

onLoadsSuccess时取得datagrid   panel

var panel = $("#ypxxdataGridDemo").datagrid('getPanel').attr('tabindex',0);

//多次加载先取消在绑定

panel.off("keydown").bind('keydown',function(e){

switch(e.keyCode){

        case 38: // up

CHIS.selectRow(true,$("#ypxxdataGridDemo"),$("#ypxxdataGridDemo").datagrid("options").onSelectFn);

                         returnfalse;

         case40: // down

        CHIS.selectRow(false,$("#ypxxdataGridDemo"),$("#ypxxdataGridDemo").datagrid("options").onSelectFn);

                         returnfalse;

          }

});

 },