在yii中使用分页

$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,
      	  )
      	  );