$criteria = new CDbCriteria();     //new cdbcriteria数据库
$criteria->id = 'id ASC';           //排序规则

$count = Exchange::model()->count($criteria);

$pager = new CPagination($count);

$pager->pageSize=30;

$pager->applyLimit($criteria);

$categoryInfo = Category::model()->findAll($criteria); //根据条件查询

$criteria = new CDbCriteria();

$criteria->order = 'id ASC';

$criteria->addCondition('status=1');      //根据条件查询

$criteria->addCondition('exchange_status=0');

$count = Exchange::model()->count($criteria);

$pager = new CPagination($count);

$pager->pageSize=30;

$pager->applyLimit($criteria);

$exchangeInfo = Exchange::model()->findAll($criteria);

 $this->widget('CLinkPager',array(

      	  		'header'=>'',

      	  		'firstPageLabel' => '首页',

      	  		'lastPageLabel' => '末页',

      	  		'prevPageLabel' => '上一页',

      	  		'nextPageLabel' => '下一页',

      	  		'pages' => $pages,

      	  		'maxButtonCount'=>8,

      	  )

      	  );