Ajax Response Not Needed

I want use ajax just to pass values to my controller, and no need for a responses , because the action in the controller is downloading a file

$file = Yii::app()->file->set('C:\.......', true);

            $filename = '188.xls';


and instead of starting downloading the file, its giving me a funny response

Simply, is there any ways to use ajax :

$this->beginWidget('bootstrap.widgets.TbButton', array(

       'buttonType' => 'ajaxSubmit',


only to have data in my controller, i dont need any response

any one please?

all what i need is get the values in$_post to use them, and no ajax response