How to get increment id on current page?

Question

I need to redirect to get data relevant to current increment ID of Order entity? So how I find current increment ID?

public function viewAction() {      
    $this->loadLayout();
    if($increment_id = $this->getRequest()->getParam('increment_id')) {
        Mage::register('current_increment_id',$increment_id);
        $this->_setActiveMenu('casestation');
        $this->_addContent(
            $this->getLayout()->createBlock('casestation/adminhtml_print')
        );
    }
    return $this->renderLayout();
}

Page page directed according to above function. I need to add button here and want to get order details on current increment ID.

Answer 1

I think you need to assign current increment-id to variable.

 $currentIncrementId = $this->getRequest()->getParam('increment_id');  

This will help to assign current increment ID into new variable.