How to add Upload Button for importing a csv file in the Custom Admin Grid Container?

Question

I'm creating a custom module where i have a requirement to add a upload button to the Grid container for uplaoding a csv file and execute it to update a attribute value in the database. how do i achieve this.enter image description here

Answer 1

Add button as per following:

class XYZ_Brand_Block_Adminhtml_Brand extends Mage_Adminhtml_Block_Widget_Grid_Container {
 public function __construct() {
 $this->_controller = 'adminhtml_brand';
 $this->_blockGroup = 'brand';
 $this->_headerText = Mage::helper('core')->__('Sample Text');
 parent::__construct();
 $this->_removeButton('add');
 $this->_addButton("Import", array(
 "label" => Mage::helper("core")->__("Import"),
 "onclick" => "location.href = '" . $this->getUrl('brand/adminhtml_import') . "';",
 "class" => "btn btn-danger",
 ));
 }
}